TWI692538B - Thin-film manufacturing apparatus with vhf reactive plasma and thin-film deposition method - Google Patents
Thin-film manufacturing apparatus with vhf reactive plasma and thin-film deposition method Download PDFInfo
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本發明是有關於一種薄膜製造設備及薄膜沉積方法,且特別是有關於一種超高頻反應式電漿薄膜製造設備及使用其之薄膜沉積方法。 The invention relates to a thin film manufacturing equipment and a thin film deposition method, and particularly relates to an ultra-high frequency reactive plasma film manufacturing equipment and a thin film deposition method using the same.
電漿沉積技術利用氣體被離子化所產生的離子撞擊靶材,以使靶材的材料被撞擊出來而沉積於基板,進而形成薄膜。電漿沉積技術在光電領域被廣泛地運用於形成金屬薄膜以及透明導電薄膜。 Plasma deposition technology uses the ions generated by the ionization of the gas to strike the target, so that the material of the target is knocked out and deposited on the substrate, thereby forming a thin film. Plasma deposition technology is widely used in the field of optoelectronics to form metal films and transparent conductive films.
然而,進行長時間的電漿沉積製程時,會因電漿溫度提高而造成電漿電流值下降。如此一來,隨著電漿沉積製程的時間增加,會產生薄膜沉積速率降低以及薄膜均勻性降低的問題。除此之外,電漿溫度提高亦會造成基板上其他膜層結晶性改變的問題。 However, when the plasma deposition process is performed for a long time, the plasma current value will decrease due to the increase in plasma temperature. As a result, as the time of the plasma deposition process increases, there will be a problem of reduced film deposition rate and reduced film uniformity. In addition, the increase in plasma temperature will also cause the crystallinity of other films on the substrate to change.
本發明提供一種超高頻反應式電漿薄膜製造設備,可避免電漿溫度過高的問題。 The invention provides an ultra-high frequency reactive plasma film manufacturing equipment, which can avoid the problem of excessive plasma temperature.
本發明提供一種薄膜沉積方法,可在長時間下維持薄膜的形成速率以及均勻性。 The invention provides a thin film deposition method, which can maintain the formation rate and uniformity of the thin film for a long time.
本發明實施例的超高頻反應式電漿薄膜製造設備包括腔體、至少一電漿源模組、至少一脈衝調變控制器、靶材放置模組、基板載座以及超高頻交流功率產生器。電漿源模組連接至腔體。脈衝調變控制器耦接於電漿源模組。脈衝調變控制器控制電漿源模組,以產生脈衝電漿。靶材放置模組設置於腔體中。基板載座設置於腔體中,且位於靶材放置模組上方。超高頻交流功率產生器電性連接於靶材放置模組,以於靶材放置模組及基板載座之間產生高頻交流電場。 The ultra-high frequency reactive plasma film manufacturing equipment of the embodiment of the present invention includes a cavity, at least one plasma source module, at least one pulse modulation controller, target placement module, substrate carrier, and ultra-high frequency AC power Generator. The plasma source module is connected to the cavity. The pulse modulation controller is coupled to the plasma source module. The pulse modulation controller controls the plasma source module to generate pulse plasma. The target placement module is set in the cavity. The substrate carrier is arranged in the cavity and above the target placement module. The UHF AC power generator is electrically connected to the target placement module to generate a high frequency AC electric field between the target placement module and the substrate carrier.
在本發明的一實施例中,電漿源模組包括氣體供應裝置、陰極放電管以及第一電磁線圈。陰極放電管連接於氣體供應裝置。第一電磁線圈設置於陰極放電管的靠近腔體的一側,且耦接於脈衝調變控制器。 In an embodiment of the invention, the plasma source module includes a gas supply device, a cathode discharge tube, and a first electromagnetic coil. The cathode discharge tube is connected to the gas supply device. The first electromagnetic coil is disposed on the side of the cathode discharge tube close to the cavity, and is coupled to the pulse modulation controller.
在本發明的一實施例中,超高頻反應式電漿薄膜製造設備更包括第一磁鐵、第二電磁線圈以及第二磁鐵。第一磁鐵設置於電漿源模組的周圍。第二電磁線圈設置於靶材放置模組的周圍。第二磁鐵設置於第二電磁線圈的周圍。 In an embodiment of the invention, the ultra-high frequency reactive plasma film manufacturing equipment further includes a first magnet, a second electromagnetic coil, and a second magnet. The first magnet is arranged around the plasma source module. The second electromagnetic coil is arranged around the target placement module. The second magnet is disposed around the second electromagnetic coil.
在本發明的一實施例中,超高頻反應式電漿薄膜製造設備更包括第三電磁線圈。第三電磁線圈設置於腔體的內側,且位於腔體的連通於電漿源模組的開口的周圍。 In an embodiment of the invention, the ultra-high frequency reactive plasma film manufacturing equipment further includes a third electromagnetic coil. The third electromagnetic coil is disposed inside the cavity, and is located around the opening of the cavity communicating with the plasma source module.
在本發明的一實施例中,至少一電漿源模組包括多個電漿源模組,至少一脈衝調變控制器包括多個脈衝調變控制器,多個電漿源模組分別耦接至多個脈衝調變控制器。 In an embodiment of the present invention, at least one plasma source module includes multiple plasma source modules, at least one pulse modulation controller includes multiple pulse modulation controllers, and the multiple plasma source modules are respectively coupled Connected to multiple pulse modulation controllers.
在本發明的一實施例中,超高頻交流功率產生器所產生的脈衝頻率為40.68MHz至81.36MHz。 In an embodiment of the invention, the pulse frequency generated by the UHF AC power generator is 40.68MHz to 81.36MHz.
本發明實施例的薄膜沉積方法包括下列步驟。提供前述的超高頻反應式電漿薄膜製造設備。放置靶材於靶材放置模組上。放置基板於基板載座上。藉由超高頻交流功率產生器將於置有靶材的靶材放置模組與置有基板的基板載座之間產生高頻交流電場。以至少一脈衝調變控制器控制至少一電漿源模組,以產生脈衝電漿。使脈衝電漿撞擊靶材放置模組上的靶材。使靶材放置模組上的靶材的材料行進至基板的表面而形成薄膜。 The thin film deposition method of the embodiment of the present invention includes the following steps. Provide the aforementioned ultra-high frequency reactive plasma film manufacturing equipment. Place the target on the target placement module. Place the substrate on the substrate carrier. The ultra-high frequency AC power generator generates a high-frequency AC electric field between the target placement module on which the target is placed and the substrate carrier on which the substrate is placed. At least one pulse modulation controller controls at least one plasma source module to generate pulse plasma. Make the pulsed plasma hit the target on the target placement module. The target material on the target placement module travels to the surface of the substrate to form a thin film.
在本發明的一實施例中,超高頻反應式電漿薄膜製造設備更包括第一磁鐵及第二磁鐵,且薄膜沉積方法更包括下列步驟。以第一電磁鐵與第二電磁鐵控制脈衝電漿的行進路徑,以使脈衝電漿經轉向後行進至靶材放置模組上的靶材。 In an embodiment of the invention, the ultra-high frequency reactive plasma film manufacturing equipment further includes a first magnet and a second magnet, and the film deposition method further includes the following steps. The first electromagnet and the second electromagnet are used to control the traveling path of the pulsed plasma, so that the pulsed plasma can travel to the target on the target placement module after being turned.
在本發明的一實施例中,至少一電漿源模組包括多個電漿源模組,至少一脈衝調變控制器包括多個脈衝調變控制器,多個電漿源模組分別耦接至多個脈衝調變控制器。 In an embodiment of the present invention, at least one plasma source module includes multiple plasma source modules, at least one pulse modulation controller includes multiple pulse modulation controllers, and the multiple plasma source modules are respectively coupled Connected to multiple pulse modulation controllers.
在本發明的一實施例中,脈衝電漿的脈衝寬度範圍為10μs至3000μs。 In an embodiment of the invention, the pulse width of the pulsed plasma ranges from 10 μs to 3000 μs.
在本發明的一實施例中,脈衝電漿的脈衝寬度在所述脈衝電漿的開關週期中所佔的百分比範圍為1%至99%。 In an embodiment of the invention, the percentage of the pulse width of the pulsed plasma in the switching period of the pulsed plasma ranges from 1% to 99%.
在本發明的一實施例中,脈衝電漿的脈衝電壓峰值的絕對值範圍為400V至1000V。 In an embodiment of the invention, the absolute value of the peak value of the pulse voltage of the pulse plasma is 400V to 1000V.
基於上述,本發明實施例的超高頻反應式電漿薄膜製造設備以及薄膜沉積方法藉由脈衝調變控制器控制電漿源模組,以產生脈衝電漿。相較於持續式的電漿,脈衝電漿為間歇式的電漿。另外,藉由超高頻交流功率產生器可以在靶材放置模組及基板載座之間產生高頻交流電場。因此可以維持脈衝電漿的電漿離子能量密度並可使施加於功率產生器之直流功率降低,而使脈衝電漿的溫度對應地降低。如此一來,可避免電漿溫度過高。因此,可避免因電漿溫度過高而造成電漿電流值下降的問題。換言之,可在長時間下維持薄膜的形成速率與薄膜的均勻性。此外,在基板上已形成有其他膜層的情況下,可避免因電漿溫度過高而造成的熱累積效應,故可避免影響基板上已形成的膜層的結晶性。再者,由於可避免電漿溫度過高,故可避免高能量粒子對基板上已形成的膜層造成損壞。 Based on the above, the ultra-high frequency reactive plasma film manufacturing equipment and the film deposition method of the embodiments of the present invention control the plasma source module by the pulse modulation controller to generate pulse plasma. Compared to continuous plasma, pulsed plasma is intermittent plasma. In addition, the UHF AC power generator can generate a high-frequency AC electric field between the target placement module and the substrate carrier. Therefore, the plasma ion energy density of the pulsed plasma can be maintained and the DC power applied to the power generator can be reduced, and the temperature of the pulsed plasma can be reduced accordingly. In this way, the plasma temperature can be prevented from being too high. Therefore, it is possible to avoid the problem that the plasma current value drops due to excessive plasma temperature. In other words, the film formation rate and film uniformity can be maintained for a long time. In addition, when other film layers have been formed on the substrate, the heat accumulation effect caused by the plasma temperature being too high can be avoided, so that the crystallinity of the film layers formed on the substrate can be avoided. Furthermore, since the plasma temperature can be prevented from being too high, the high energy particles can be prevented from damaging the film layer formed on the substrate.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.
10、30:超高頻反應式電漿薄膜製造設備 10.30: UHF reactive plasma film manufacturing equipment
100:腔體 100: cavity
102、104:開口 102, 104: opening
110:電漿源模組 110: Plasma source module
112:氣體供應裝置 112: Gas supply device
114:陰極放電管 114: Cathode discharge tube
116:第一電磁線圈 116: First solenoid
120:脈衝調變控制器 120: pulse modulation controller
130:功率產生器 130: power generator
140:第一磁鐵 140: the first magnet
142:第二電磁線圈 142: Second electromagnetic coil
144:第二磁鐵 144: Second magnet
146:第三電磁線圈 146: Third electromagnetic coil
150:靶材放置模組 150: Target placement module
152:靶材座 152: target seat
154:靶材 154: target material
160:基板載座 160: substrate carrier
162:基板 162: Substrate
170:反應性氣體供應裝置 170: Reactive gas supply device
180:超高頻交流功率產生器 180: UHF AC power generator
P:脈衝電壓峰值 P: peak pulse voltage
PL、PL1:脈衝電漿 PL, PL1: pulse plasma
S410、S421、S422、S430、S440、S450、S460:步驟 S410, S421, S422, S430, S440, S450, S460: steps
T:開關週期 T: switching cycle
W:脈衝寬度 W: pulse width
圖1是依照本發明一實施例的超高頻反應式電漿薄膜製造設備的示意圖。 FIG. 1 is a schematic diagram of an ultra-high frequency reactive plasma film manufacturing equipment according to an embodiment of the present invention.
圖2是依照本發明一實施例的直流脈衝電漿的電壓對時間圖。 2 is a graph of voltage versus time for a DC pulsed plasma according to an embodiment of the invention.
圖3是依照本發明另一實施例的超高頻反應式電漿薄膜製造設備的示意圖。 3 is a schematic diagram of an ultra-high frequency reactive plasma film manufacturing equipment according to another embodiment of the present invention.
圖4是依照本發明一實施例的薄膜沉積方法的流程圖。 FIG. 4 is a flowchart of a thin film deposition method according to an embodiment of the invention.
圖5是比較例與實施例的溫度對鍍膜時間曲線圖。 FIG. 5 is a graph of temperature versus coating time for the comparative example and the example.
以下將參照本實施例之圖式以更全面地闡述本發明。然而,本發明亦可以各種不同的形式體現,而不應限於本文中所述之實施例。圖式中的層與區域的厚度會為了清楚起見而放大。相同或相似之參考號碼表示相同或相似之元件,以下段落將不再一一贅述。另外,實施例中所提到的方向用語,例如:上、下、左、右、前或後等,僅是參考附加圖式的方向。因此,使用的方向用語是用來說明並非用來限制本發明。 The present invention will be explained more fully below with reference to the drawings of this embodiment. However, the present invention can also be embodied in various forms, and should not be limited to the embodiments described herein. The thickness of layers and regions in the drawings will be exaggerated for clarity. The same or similar reference numbers indicate the same or similar elements, and the following paragraphs will not repeat them one by one. In addition, the directional terms mentioned in the embodiments, for example: up, down, left, right, front or back, etc., are only the directions referring to the attached drawings. Therefore, the directional terminology is used to illustrate rather than limit the invention.
圖1是依照本發明一實施例的超高頻反應式電漿薄膜製造設備的示意圖。 FIG. 1 is a schematic diagram of an ultra-high frequency reactive plasma film manufacturing equipment according to an embodiment of the present invention.
請參照圖1,本發明實施例的超高頻反應式電漿薄膜製造
設備10包括腔體100、至少一電漿源模組110、至少一脈衝調變控制器120、靶材放置模組150、基板載座160以及超高頻(Very High Frequency,VHF)交流功率產生器180。在一實施例中,腔體10可經由開口102而連接至抽真空裝置(未繪示)。如此一來,超高頻反應式電漿薄膜製造設備10在運作時,腔體100內的氣壓可以小於腔體100外的氣壓(即,腔體100內維持負壓)。
Please refer to FIG. 1, manufacturing of ultra-high frequency reactive plasma film according to an embodiment of the present invention
The
電漿源模組110連接至腔體100,且脈衝調變控制器120耦接至電漿源模組110。脈衝調變控制器120控制電漿源模組110,以產生脈衝電漿PL。超高頻交流功率產生器180電性連接於靶材放置模組150,以於靶材放置模組150及基板載座160之間產生高頻交流電場。
The
在一實施例中,超高頻反應式電漿薄膜製造設備10更可包括功率產生器130。脈衝調變控制器120耦接於電漿源模組110與功率產生器130之間。舉例而言,功率產生器130可為直流功率產生器。如此一來,經脈衝調變控制器120控制的電漿源模組110所產生的脈衝電漿PL可為直流脈衝電漿。
In an embodiment, the ultra-high frequency reactive plasma
圖2是依照本發明一實施例的直流脈衝電漿的電壓對時間圖。 2 is a graph of voltage versus time for a DC pulsed plasma according to an embodiment of the invention.
請參照圖1與圖2,在一實施例中,經脈衝調變控制器120控制的電漿源模組110所產生的脈衝電漿PL的脈衝寬度W的範圍可為10μs至3000μs。脈衝電漿PL的脈衝寬度W在脈衝電漿PL的開關週期T中所佔的百分比範圍可為1%至99%。此
外,脈衝電漿PL的脈衝電壓峰值P的絕對值範圍可為400V至1000V。
1 and 2, in one embodiment, the pulse width PL of the pulse plasma PL generated by the
請參照圖1,在一實施例中,電漿源模組110可包括氣體供應裝置112、陰極放電管114以及第一電磁線圈116。陰極放電管114連接於氣體供應裝置112。第一電磁線圈116設置於陰極放電管114的靠近腔體100的一側,且耦接於脈衝調變控制器120。
Please refer to FIG. 1. In an embodiment, the
在一實施例中,氣體供應裝置112可為質流控制器(mass flow controller)。氣體供應裝置112可提供氣體至陰極放電管114。在一實施例中,由氣體供應裝置112提供的氣體可包括氬氣、氦氣、氧氣、氮氣或其組合,但本發明不限於此。
In an embodiment, the
陰極放電管114可作為陰極,且第一電磁線圈116可作為陽極。脈衝調變控制器120可調控陰極放電管114與第一電磁線圈116之間的電壓,可使其成為如圖2所示的脈衝電壓。此脈衝電壓可將上述氣體離子化,以形成脈衝電漿PL。脈衝電漿PL可在電磁場的作用下行進至腔體100的內部。在一實施例中,第一電磁線圈116可為環形(圖1中示意性地繪示出環形的第一電磁線圈116的剖面形狀),以使脈衝電漿PL可通過環形的第一電磁線圈116而進入腔體100。
The
靶材放置模組150設置於腔體100中。舉例而言,電漿源模組110可連接於腔體100的側壁,且靶材放置模組150可設置於腔體100的底部。在一實施例中,靶材放置模組150可包括靶材座152以及靶材154。靶材154安裝於靶材座152上。此外,
可施加負偏壓於靶材座152上。脈衝電漿PL的行進路徑可經控制,以使脈衝電漿PL行進至靶材放置模組150。如此一來,脈衝電漿PL可撞擊靶材154。在一實施例中,靶材154的材料可包括銦、鎵、錫或其組合,但本發明不限於此。
The
在一實施例中,超高頻反應式電漿薄膜製造設備10更可包括第一磁鐵140、第二電磁線圈142與第二磁鐵144。第一磁鐵140可設置於電漿源模組110的周圍。第二電磁線圈142設置於靶材放置模組150的周圍,且第二磁鐵144設置於第二電磁線圈142的周圍。除此之外,超高頻反應式電漿薄膜製造設備10更可包括第三電磁線圈146。第三電磁線圈146設置於腔體100的內側,且位於腔體100的連通於電漿源模組110的開口104的周圍。
In an embodiment, the UHF reactive plasma
在一實施例中,第一磁鐵140、第二電磁線圈142、第二磁鐵144以及第三電磁線圈146皆可為環形結構。圖1中示意性地繪示出環形的第一磁鐵140、環形的第二電磁線圈142、環形的第二磁鐵144以及環形的第三電磁線圈146的剖面形狀。藉由設置第一磁鐵140、第二電磁線圈142、第二磁鐵144以及第三電磁線圈146,可控制脈衝電漿PL的行進路徑。如此一來,可使脈衝電漿PL由開口104進入腔體100之後,經轉向而行進至靶材放置模組150。
In an embodiment, the
基板載座160設置於腔體100中,且位於靶材放置模組150上方。基板162可設置於基板載座160的面對靶材放置模組150的一側。在一實施例中,超高頻反應式電漿薄膜製造設備10
可包括多個基板載座160,且多個基板162分別設置於多個基板載座160上。多個基板載座160可依序被傳送至腔體100中面對靶材放置模組150的位置。脈衝電漿PL撞擊靶材154,以使靶材154的材料沉積在基板162的表面而形成薄膜。
The
在一實施例中,超高頻反應式電漿薄膜製造設備10更可包括反應性氣體供應裝置170。反應性氣體供應裝置170連接至腔體100。反應性氣體供應裝置170可提供反應性氣體至靶材154與基板162之間。如此一來,靶材154經撞擊出的材料可與反應性氣體反應,以生成反應產物。接著,反應產物沉積於基板162的表面上以形成薄膜。在一實施例中,反應性氣體可包括氧氣、氮氣、氫氣或其組合。此外,在一實施例中,沉積於基板162上的薄膜的材料可包括氧化銦(In2O3)、氧化銦錫(indium tin oxide,ITO)、氧化錫(SnO2)、氧化鋅(ZnO)、氧化鎘(CdO)、氧化銦鎘(CdIn2O4)、氧化錫鎘(Cd2SnO4)、氧化錫鋅(Zn2SnO4)、摻雜氧化銦的氧化鋅(In2O3-ZnO)、摻雜鎢的氧化銦(IWO)、摻雜鈦的氧化銦(ITiO)或其組合。
In an embodiment, the ultra-high frequency reactive plasma
基於上述實施例可知,在超高頻反應式電漿薄膜製造設備10中,以脈衝調變控制器120控制電漿源模組110,可產生脈衝電漿PL。相較於持續式的電漿,脈衝電漿PL為間歇式的電漿。如此一來,可避免電漿溫度過高。因此,可避免因電漿溫度過高而造成電漿電流值下降的問題。換言之,可在長時間下維持薄膜的形成速率與薄膜的均勻性。此外,在基板162上已形成有其他
膜層的情況下,可避免因電漿溫度過高而造成的熱累積效應,故可避免影響基板162上已形成的膜層的結晶性。再者,由於可避免電漿溫度過高,故可避免高能量粒子對基板162上已形成的膜層造成損壞。另外,藉由超高頻交流功率產生器160可以在靶材放置模組150及基板載座160之間產生高頻交流電場。因此可以維持脈衝電漿PL的電漿離子能量密度並可使施加於功率產生器130之直流功率降低,而使脈衝電漿PL的溫度對應地降低,且可以具有良好的鍍膜速率。
Based on the above embodiment, it can be known that in the ultra-high frequency reactive plasma
圖3是依照本發明另一實施例的超高頻反應式電漿薄膜製造設備的示意圖。 3 is a schematic diagram of an ultra-high frequency reactive plasma film manufacturing equipment according to another embodiment of the present invention.
請參照圖1與圖3,超高頻反應式電漿薄膜製造設備30相似於超高頻反應式電漿薄膜製造設備10,惟超高頻反應式電漿薄膜製造設備30包括兩組電漿源模組110以及兩個脈衝調變控制器120。兩組脈衝調變控制器120分別耦接至兩組電漿源模組110。如此一來,可藉由兩組脈衝調變控制器120分別控制兩組電漿源模組110,以共同產生脈衝電漿PL1。在一實施例中,兩組電漿源模組110設置於腔體100的相對兩側。如此一來,脈衝電漿PL1的分布可為對稱的形狀,且可提高脈衝電漿PL1撞擊靶材154的撞擊面積。因此,可適用於具有大面積的靶材,且可在基板162的表面上形成更大面積的薄膜。在一實施例中,超高頻反應式電漿薄膜製造設備30更可包括兩個功率產生器130。各個脈衝調變控制器120耦接於各個電漿源模組110與各個功率產生器130之
間。然而,所屬領域中具有通常知識者可依據產品需求而調整電漿源模組110、脈衝調變控制器120以及功率產生器130的數量,本發明並不以此為限。
1 and 3, the UHF reactive plasma
圖4是依照本發明一實施例的薄膜沉積方法的流程圖。 FIG. 4 is a flowchart of a thin film deposition method according to an embodiment of the invention.
請參照圖4,進行步驟S410,提供超高頻反應式電漿薄膜製造設備。在後續的續述中,薄膜沉積方法是以圖1所示的超高頻反應式電漿薄膜製造設備10為例才進行描述,故採用超高頻反應式電漿薄膜製造設備10或類似於超高頻反應式電漿薄膜製造設備10的其他超高頻反應式電漿薄膜製造設備所屬的元件或對應的元件符號來進行說明,但應注意的是,本發明的薄膜沉積方法並不限於採用圖1所示的超高頻反應式電漿薄膜製造設備10,其他類似於超高頻反應式電漿薄膜製造設備10的超高頻反應式電漿薄膜製造設備亦可用於薄膜的沉積。
Referring to FIG. 4, step S410 is performed to provide ultra-high frequency reactive plasma film manufacturing equipment. In the subsequent continuation, the film deposition method is described using the ultra-high frequency reactive plasma
進行步驟S421,放置靶材154於靶材放置模組150上。
In step S421, the
進行步驟S422,放置基板162於基板載座160上。
In step S422, the
值的注意的是,本實施例並不限制步驟S421及步驟S422的先後順序。換句話說,可以先執行步驟S421,然後再執行步驟S422,或是,可以先執行步驟S422,然後再執行步驟S421。 It should be noted that the present embodiment does not limit the sequence of step S421 and step S422. In other words, step S421 can be executed first, and then step S422 can be executed, or step S422 can be executed first, and then step S421 can be executed.
進行步驟S430,藉由超高頻交流功率產生器180於置有靶材154的靶材放置模組150與置有基板162的基板載座160之間產生高頻交流電場。此外,由超高頻交流功率產生器180所產生的高頻交流電場的脈衝頻率可以為40.68MHz至81.36MHz。
Step S430 is performed to generate a high-frequency AC electric field between the
進行步驟S440,以脈衝調變控制器120控制電漿源模組110,以產生脈衝電漿PL。具體而言,脈衝調變控制器120可用以調變提供至電漿源模組110的脈衝電壓。此脈衝電壓可使電漿源模組100中的氣體離子化,而形成脈衝電漿PL。
In step S440, the
可進行步驟S450,以第一磁鐵140與第二磁鐵144控制脈衝電漿PL的行進路徑。如此一來,可使脈衝電漿PL經轉向後行進至靶材154。在一實施例中,步驟S420更包括以第二電磁線圈144以及第三電磁線圈146輔助控制脈衝電漿PL的行進路徑。
Step S450 may be performed to control the travel path of the pulsed plasma PL with the
進行步驟S460,使脈衝電漿PL撞擊靶材154。接著,進行步驟S440,使靶材154的材料行進至基板162的表面而形成薄膜。具體而言,脈衝電漿PL會將靶材154的部分材料撞擊出來,且自靶材154撞擊出來的材料可具有動能,且可在電場的作用下行進至基板162的表面而形成薄膜。在一實施例中,可藉由在基板載座152施加偏壓,以使脈衝電漿PL撞擊靶材154。請參照圖2,脈衝電漿PL的脈衝寬度W的範圍可為10μs至3000μs。脈衝電漿PL的脈衝寬度W在脈衝電漿PL的開關週期T中所佔的百分比範圍可為1%至99%。此外,脈衝電漿PL的脈衝電壓峰值P的絕對值範圍可為400V至1000V。
Step S460 is performed to cause the pulsed plasma PL to strike the
在一實施例中,步驟S440更可包括提供反應性氣體至基板162與靶材154之間。在一實施例中,可藉由反應性氣體供應裝置170提供反應性氣體至基板162與靶材154之間。如此一來,靶材154經撞擊出的材料可與反應性氣體反應,以生成反應產物。
接著,此反應產物會沉積於基板162的表面上,以形成薄膜。
In one embodiment, step S440 may further include providing a reactive gas between the
請參照圖3與圖4,在另一實施例中,步驟S420更可包括以多個脈衝調變控制器120(例如是兩個脈衝調變控制器120)分別控制多個電漿源模組110(例如是兩組電漿源模組110),以共同產生脈衝電漿PL1。 Please refer to FIGS. 3 and 4. In another embodiment, step S420 may further include multiple pulse modulation controllers 120 (for example, two pulse modulation controllers 120) respectively controlling multiple plasma source modules 110 (for example, two sets of plasma source modules 110) to jointly generate pulsed plasma PL1.
為了證明本發明的超高頻反應式電漿薄膜製造設備可使脈衝電漿的溫度對應地降低,特別以下列比較例與實施例作為說明。然而,這些實施例在任何意義上均不解釋為限制本發明之範疇。 In order to prove that the ultra-high frequency reactive plasma film manufacturing equipment of the present invention can reduce the temperature of the pulsed plasma accordingly, the following comparative examples and examples are particularly described as an example. However, these examples are not to be construed as limiting the scope of the present invention in any sense.
圖5是比較例1與實施例1的溫度對鍍膜時間曲線圖。比較例1與實施例1的實驗條件基本上相同,差別僅在於比較例1中的超高頻反應式電漿薄膜製造設備的超高頻交流功率產生器沒有啟動,而實施例1中的超高頻反應式電漿薄膜製造設備的超高頻交流功率產生器有啟動。 5 is a graph of temperature versus coating time for Comparative Example 1 and Example 1. FIG. The experimental conditions of Comparative Example 1 and Example 1 are basically the same, the only difference is that the ultra-high frequency AC power generator of the ultra-high frequency reactive plasma film manufacturing equipment in Comparative Example 1 is not activated, while the ultra-high frequency in Example 1 The UHF AC power generator of the high-frequency reactive plasma film manufacturing equipment has been activated.
具體而言,比較例1與實施例1是以圖1所示的超高頻反應式電漿薄膜製造設備10進行鍍膜測試,並在腔體10內的氣壓為8~11mTorr,且氣體供應裝置112所供應的氧氣氣體流量為90sccm的氛圍下,以氧電漿(O2 plasma)進行鍍膜測試。
Specifically, in Comparative Example 1 and Example 1, the ultra-high frequency reactive plasma
在比較例1中,未啟動超高頻交流功率產生器,此時,功率產生器130的輸出功率可設定為20KW。
In Comparative Example 1, the UHF AC power generator is not activated, and at this time, the output power of the
在實施例1中,將超高頻交流功率產生器180的頻率設
定為40.68MHz,功率設定為1KW,此時,功率產生器130的輸出功率可設定為15KW。
In
比較例1的鍍膜速率與實施例1的鍍膜速率基本上相同。並且,經由測量對應的基板載座160的溫度,所得到如圖5所示的溫度對鍍膜時間曲線圖。
The coating rate of Comparative Example 1 is substantially the same as the coating rate of Example 1. Furthermore, by measuring the temperature of the corresponding
將比較例1與實施例1相比較,藉由超高頻交流功率產生器可以在靶材放置模組及基板載座之間產生高頻交流電場。因此可以維持脈衝電漿的電漿離子能量密度並可使施加於功率產生器之直流功率降低,而使脈衝電漿的溫度對應地降低,且可以具有良好的鍍膜速率。 Comparing Comparative Example 1 with Example 1, the ultra-high frequency AC power generator can generate a high-frequency AC electric field between the target placement module and the substrate carrier. Therefore, the plasma ion energy density of the pulsed plasma can be maintained and the DC power applied to the power generator can be reduced, so that the temperature of the pulsed plasma is correspondingly reduced, and a good coating rate can be achieved.
綜上所述,本發明實施例的超高頻反應式電漿薄膜製造設備以及薄膜沉積方法藉由脈衝調變控制器控制電漿源模組,以產生脈衝電漿。相較於持續式的電漿,脈衝電漿為間歇式的電漿。另外,藉由超高頻交流功率產生器可以在靶材放置模組及基板載座之間產生高頻交流電場。因此可以維持脈衝電漿的電漿離子能量密度並可使施加於功率產生器之直流功率降低,而使脈衝電漿的溫度對應地降低。如此一來,可避免電漿溫度過高。因此,可避免因電漿溫度過高而造成電漿電流值下降的問題。換言之,可在長時間下維持薄膜的形成速率與薄膜的均勻性。此外,在基板上已形成有其他膜層的情況下,可避免因電漿溫度過高而造成的熱累積效應,故可避免影響基板上已形成的其他膜層的結晶性。再者,由於可避免電漿溫度過高,故可避免高能量粒子對基板上 已形成的其他膜層造成損壞。 In summary, the ultra-high frequency reactive plasma film manufacturing equipment and the film deposition method of the embodiments of the present invention control the plasma source module by the pulse modulation controller to generate pulse plasma. Compared to continuous plasma, pulsed plasma is intermittent plasma. In addition, the UHF AC power generator can generate a high-frequency AC electric field between the target placement module and the substrate carrier. Therefore, the plasma ion energy density of the pulsed plasma can be maintained and the DC power applied to the power generator can be reduced, and the temperature of the pulsed plasma can be reduced accordingly. In this way, the plasma temperature can be prevented from being too high. Therefore, it is possible to avoid the problem that the plasma current value drops due to excessive plasma temperature. In other words, the film formation rate and film uniformity can be maintained for a long time. In addition, when other film layers have been formed on the substrate, the heat accumulation effect caused by excessive plasma temperature can be avoided, so that the crystallinity of other film layers formed on the substrate can be avoided. Furthermore, since the plasma temperature can be prevented from being too high, high energy particles can be prevented from hitting the substrate The other film layers that have been formed cause damage.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.
10:超高頻反應式電漿薄膜製造設備 10: UHF reactive plasma film manufacturing equipment
100:腔體 100: cavity
102、104:開口 102, 104: opening
110:電漿源模組 110: Plasma source module
112:氣體供應裝置 112: Gas supply device
114:陰極放電管 114: Cathode discharge tube
116:第一電磁線圈 116: First solenoid
120:脈衝調變控制器 120: pulse modulation controller
130:功率產生器 130: power generator
140:第一磁鐵 140: the first magnet
142:第二電磁線圈 142: Second electromagnetic coil
144:第二磁鐵 144: Second magnet
146:第三電磁線圈 146: Third electromagnetic coil
150:靶材放置模組 150: Target placement module
152:靶材座 152: target seat
154:靶材 154: target material
160:基板載座 160: substrate carrier
162:基板 162: Substrate
170:反應性氣體供應裝置 170: Reactive gas supply device
180:超高頻交流功率產生器 180: UHF AC power generator
PL:脈衝電漿 PL: pulse plasma
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