JP2006186262A - 固体撮像装置及びその製造方法 - Google Patents
固体撮像装置及びその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000007787 solid Substances 0.000 title abstract 3
- 239000012535 impurity Substances 0.000 claims abstract description 104
- 239000000758 substrate Substances 0.000 claims abstract description 84
- 229910052738 indium Inorganic materials 0.000 claims abstract description 73
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000004065 semiconductor Substances 0.000 claims abstract description 60
- 238000005468 ion implantation Methods 0.000 claims description 64
- 229910052796 boron Inorganic materials 0.000 claims description 62
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 61
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 37
- 229910052710 silicon Inorganic materials 0.000 claims description 37
- 239000010703 silicon Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 26
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 20
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 20
- 229910001449 indium ion Inorganic materials 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 57
- 239000013078 crystal Substances 0.000 description 36
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- 230000015572 biosynthetic process Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 238000001312 dry etching Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- -1 boron ion Chemical class 0.000 description 1
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- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
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Abstract
【解決手段】受光部15が形成された半導体基板1を備える固体撮像装置である。受光部15は、半導体基板1に形成されたp型の第1不純物領域(表面反転層)6と、表面反転層6の下に形成されたn型の第2不純物領域(光電変換領域)4とを有している。光電変換領域4は、半導体基板1にn型の不純物を導入して形成する。表面反転層6は、半導体基板1の光電変換領域4が形成された領域に、インジウムを導入して形成する。
【選択図】 図1
Description
以下、本発明の実施の形態1における固体撮像装置及びその製造方法について、図1〜図3を参照しながら説明する。最初に、図1を用いて、本実施の形態1における固体撮像装置の構成を説明する。図1は、本発明の実施の形態1における固体撮像装置の構成を示す断面図である。但し、図1は、固体撮像装置の一部、具体的には、それを構成する複数の画素の一つを示したものである。一つの画素は、受光部15と、垂直CCD部16とを有する。複数の画素は、2次元的(マトリックス状)に配列されており、固体撮像装置を構成している。
次に、本発明の実施の形態2における固体撮像装置及びその製造方法について説明する。本実施の形態2における固体撮像装置及びその製造方法は、以下の点を除いて、実施の形態1における固体撮像装置及びその製造方法と同様に構成されている。なお、以下の説明では、適宜、実施の形態1で示した図1〜図3を参照する。
次に、本発明の実施の形態3における固体撮像装置及びその製造方法について説明する。本実施の形態3における固体撮像装置及びその製造方法は、以下の点を除いて、実施の形態1における固体撮像装置及びその製造方法と同様に構成されている。なお、以下の説明では、適宜、実施の形態1で示した図1〜図3を参照する。
2 p型ウェル
3 n型領域(垂直CCD部の埋め込みチャンネル)
4 受光領域(第2不純物領域)
5 素子分離領域として機能するp型領域
6 p型の表面反転層(第1不純物領域)
7 p型領域
8 絶縁膜
9 転送ゲート電極
10 遮光膜
10a 開口部
11 層間絶縁膜
12 反射防止膜
13 表面保護膜
14 保護酸化膜
15 受光部(フォトダイオード)
16 垂直CCD部
Claims (14)
- 受光部が形成された半導体基板を備え、前記受光部は、前記半導体基板に形成されたp型の第1不純物領域と、前記第1不純物領域の下に形成されたn型の第2不純物領域とを有する固体撮像装置であって、
前記第1不純物領域は、不純物としてインジウムを含んでいることを特徴とする固体撮像装置。 - 前記半導体基板がシリコン基板であり、前記第1不純物領域が、前記不純物として、更にボロンを含んでいる請求項1に記載の固体撮像装置。
- 前記第1不純物領域において、前記インジウムと前記ボロンとの総量Nに対するインジウムの量N1の比率(N1/N)が0.4以上0.6以下である請求項2に記載の固体撮像装置。
- 前記受光部の上方に、反射防止膜が形成されている請求項1〜3のいずれかに記載の固体撮像装置。
- 前記反射防止膜が、シリコン窒化膜によって形成されている請求項4に記載の固体撮像装置。
- 前記反射防止膜が、不純物としてインジウムを含んでいる請求項5に記載の固体撮像装置。
- 受光部が形成された半導体基板を備え、前記受光部は、前記半導体基板に形成されたp型の第1不純物領域と、前記第1不純物領域の下に形成されたn型の第2不純物領域とを有する固体撮像装置の製造方法であって、
(a)前記半導体基板に、n型の不純物を導入して、n型の第2不純物領域を形成する工程と、
(b)前記半導体基板に、インジウムを導入して、p型の第1不純物領域を形成する工程とを有することを特徴とする固体撮像装置の製造方法。 - 前記半導体基板がシリコン基板であり、
前記(b)の工程において、前記インジウムの導入が、ドーズ量を5×1013(個/cm2)以上に設定したイオン注入によって行われている請求項7に記載の固体撮像装置の製造方法。 - 前記半導体基板がシリコン基板であり、
前記(b)の工程において、更にボロンが導入され、前記インジウム及び前記ボロンの導入がイオン注入によって行われる請求項7に記載の固体撮像装置の製造方法。 - 前記(b)の工程が、前記第1の不純物領域において、前記インジウムと前記ボロンとの総量Nに対する前記インジウムの量N1の比率(N1/N)が、0.4以上0.6以下となるように行われている請求項9に記載の固体撮像装置の製造方法。
- 前記(b)の工程において、前記インジウムのイオン注入後に、前記ボロンのイオン注入が行われ、前記インジウムのイオン注入が、ドーズ量を5×1013(個/cm2)以上に設定して行われている請求項9または10に記載の固体撮像装置の製造方法。
- 前記(b)の工程の終了後に、前記半導体基板を450℃〜550℃の条件下で熱処理する工程が実施される請求項7〜11に記載の固体撮像装置の製造方法。
- 前記受光部の上方にシリコン窒化膜によって反射防止膜を形成する工程を更に有する請求項7〜12のいずれかに記載の固体撮像装置の製造方法。
- 前記反射防止膜にインジウムをイオン注入する工程を更に有する請求項13に記載の固体撮像装置の製造方法。
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JP2004381017A JP4674894B2 (ja) | 2004-12-28 | 2004-12-28 | 固体撮像装置及びその製造方法 |
TW094145504A TW200640004A (en) | 2004-12-28 | 2005-12-21 | Solid-state imaging device and method for manufacturing the same |
KR1020050127835A KR20060076212A (ko) | 2004-12-28 | 2005-12-22 | 고체 촬상 장치 및 그 제조 방법 |
US11/315,114 US7589366B2 (en) | 2004-12-28 | 2005-12-22 | Solid-state imaging device and method for manufacturing the same |
CNA2005101341396A CN1812114A (zh) | 2004-12-28 | 2005-12-27 | 固态成像装置及其制造方法 |
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JP2004381017A JP4674894B2 (ja) | 2004-12-28 | 2004-12-28 | 固体撮像装置及びその製造方法 |
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JP4674894B2 JP4674894B2 (ja) | 2011-04-20 |
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JP (1) | JP4674894B2 (ja) |
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CN (1) | CN1812114A (ja) |
TW (1) | TW200640004A (ja) |
Cited By (8)
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WO2010035544A1 (ja) * | 2008-09-29 | 2010-04-01 | シャープ株式会社 | フォトダイオードおよびその製造方法ならびにフォトダイオードを備えた表示装置 |
JP2010239075A (ja) * | 2009-03-31 | 2010-10-21 | Sony Corp | 固体撮像装置とその製造方法、及び電子機器 |
WO2010140280A1 (ja) * | 2009-06-05 | 2010-12-09 | パナソニック株式会社 | 固体撮像装置 |
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US8916945B2 (en) | 2009-02-24 | 2014-12-23 | Hamamatsu Photonics K.K. | Semiconductor light-detecting element |
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US9190551B2 (en) | 2009-02-24 | 2015-11-17 | Hamamatsu Photonics K.K. | Photodiode and photodiode array |
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JP2007201091A (ja) * | 2006-01-25 | 2007-08-09 | Fujifilm Corp | 固体撮像素子の製造方法 |
JP5199545B2 (ja) * | 2006-03-03 | 2013-05-15 | セイコーインスツル株式会社 | イメージセンサおよびその製造方法 |
JP2008135636A (ja) * | 2006-11-29 | 2008-06-12 | Fujifilm Corp | 固体撮像素子およびその製造方法 |
JP5296406B2 (ja) * | 2008-04-02 | 2013-09-25 | パナソニック株式会社 | 固体撮像装置及びその製造方法 |
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Also Published As
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TW200640004A (en) | 2006-11-16 |
KR20060076212A (ko) | 2006-07-04 |
JP4674894B2 (ja) | 2011-04-20 |
CN1812114A (zh) | 2006-08-02 |
US7589366B2 (en) | 2009-09-15 |
US20060138481A1 (en) | 2006-06-29 |
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