JP7167330B2 - 光取出し効率を向上させるための紫外ledチップ及びその製造方法 - Google Patents
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Description
構造がn型半導体層、コーンピット準備層、能動層、p型半導体層、p型電極、反射層、結合層、n型電極及び基板を含む光取出し効率を向上させるための紫外LEDチップ。
2:n型半導体層
3:コーンピット準備層
4:能動層
5:p型半導体層
6:p型電極
7:反射層
8:結合層
9:n型電極
10:基板
Claims (2)
- 構造がn型半導体層(2)、コーンピット準備層(3)、能動層(4)、p型半導体層(5)、p型電極(6)、反射層(7)、結合層(8)、n型電極(9)及び基板(10)を含み、コーンピット準備層(3)がn型半導体層(2)、能動層(4)がコーンピット準備層(3)、p型半導体層(5)が能動層(4)に隣接し、n型半導体層(2)にn型電極層(9)、p型半導体層(5)にp型電極層(6)、p型電極層(6)と基板(10)との間に順に反射層(7)及び結合層(8)が形成され、コーンピット準備層(3)に六角形の多面体構造のコーンピットが形成されており、
能動層(4)は、コーンピット準備層(3)に接した側の表面とコーンピット準備層(3)から離れた側の表面とに、いずれも、コーンピット準備層(3)のコーンピットの側壁の表面形状に沿った六角形の多面体構造のコーンピットが形成されており、
コーンピットを結合するプラットフォームエリアの投影面積と全能動層(4)の投影面積との比が30%以下であることを特徴とする光取出し効率を向上させるための紫外LEDチップの製造方法であって、
下記のプロセスステップ、
1)有機金属気相成長法(MOCVD)でn型半導体層(2)、コーンピット準備層(3)、能動層(4)及びp型半導体層(5)が相次いでエピタキシャル基板(1)に堆積するようにする、
を含み、
下記のプロセスステップ、
1)p型電極(6)、反射層(7)及び結合層(8)が相次いでp型半導体層(5)の表面に堆積するようにし、金属結合プロセスで、エピタキシャル基板(1)から結合層(8)まで順に堆積した層構成が上下逆になるように裏返して、結合層(8)を基板(10)に接着し、
2)前記エピタキシャル基板(1)をはがしてn型半導体層(2)を露出させ、n型電極(9)が露出したn型半導体層(2)に堆積するようにして紫外LEDチップを取得する、
を含み、
前記コーンピット準備層(3)がSiを混入したAl x Ga 1-x Nであり、Al成分がx(1≧x≧0.1)、Siは混入濃度が5E17~1E20 cm -3 、厚さが0.1~5μmであり、この層の成長温度、H 2 雰囲気及び厚さを調節してコーンピットの密度及び口の大きさを調節することを特徴とする光取出し効率を向上させるための紫外LEDチップの製造方法。 - 構造がn型半導体層(2)、コーンピット準備層(3)、能動層(4)、p型半導体層(5)、p型電極(6)、反射層(7)、結合層(8)、n型電極(9)及び基板(10)を含み、コーンピット準備層(3)がn型半導体層(2)、能動層(4)がコーンピット準備層(3)、p型半導体層(5)が能動層(4)に隣接し、n型半導体層(2)にn型電極層(9)、p型半導体層(5)にp型電極層(6)、p型電極層(6)と基板(10)との間に順に反射層(7)及び結合層(8)が形成され、コーンピット準備層(3)に六角形の多面体構造のコーンピットが形成されており、
能動層(4)は、コーンピット準備層(3)に接した側の表面とコーンピット準備層(3)から離れた側の表面とに、いずれも、コーンピット準備層(3)のコーンピットの側壁の表面形状に沿った六角形の多面体構造のコーンピットが形成されており、
コーンピットを結合するプラットフォームエリアの投影面積と全能動層(4)の投影面積との比が30%以下であることを特徴とする光取出し効率を向上させるための紫外LEDチップの製造方法であって、
下記のプロセスステップ、
1)有機金属気相成長法(MOCVD)でn型半導体層(2)、コーンピット準備層(3)、能動層(4)及びp型半導体層(5)が相次いでエピタキシャル基板(1)に堆積するようにする、
を含み、
下記のプロセスステップ、
1)エピタキシャル層をp型半導体層(5)側からn型半導体層(2)側へエッチングしてn型半導体層(2)の一部を露出させ、n型電極(9)が露出したn型半導体層(2)に堆積するようにし、
2)p型電極(6)、反射層(7)及び結合層(8)が相次いでp型半導体層(5)の表面に堆積するようにし、
3)金属結合プロセスで、エピタキシャル基板(1)から結合層(8)まで順に堆積した層構成が上下逆になるように裏返して、結合層(8)を基板(10)に接着して紫外LEDチップを取得する、
を含み、
前記コーンピット準備層(3)がSiを混入したAl x Ga 1-x Nであり、Al成分がx(1≧x≧0.1)、Siは混入濃度が5E17~1E20 cm -3 、厚さが0.1~5μmであり、この層の成長温度、H 2 雰囲気及び厚さを調節してコーンピットの密度及び口の大きさを調節することを特徴とする光取出し効率を向上させるための紫外LEDチップの製造方法。
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CN201810765845.8A CN110718614A (zh) | 2018-07-12 | 2018-07-12 | 一种提高光提取效率的紫外发光二极管芯片及其制作方法 |
CN201810765845.8 | 2018-07-12 | ||
CN201821104745.2U CN208938998U (zh) | 2018-07-12 | 2018-07-12 | 一种提高光提取效率的深紫外发光二极管芯片 |
PCT/CN2019/094986 WO2020011117A1 (zh) | 2018-07-12 | 2019-07-08 | 一种提高光提取效率的紫外发光二极管芯片及其制作方法 |
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