JP6845926B2 - 量子ドット構造の製造方法 - Google Patents
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- 239000002096 quantum dot Substances 0.000 title claims description 119
- 238000004519 manufacturing process Methods 0.000 title claims description 63
- 230000001681 protective effect Effects 0.000 claims description 66
- 238000000034 method Methods 0.000 claims description 55
- 238000000137 annealing Methods 0.000 claims description 40
- 239000000758 substrate Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 23
- 229920002120 photoresistant polymer Polymers 0.000 claims description 19
- 239000002243 precursor Substances 0.000 claims description 19
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 8
- 238000001459 lithography Methods 0.000 claims description 8
- 238000000609 electron-beam lithography Methods 0.000 claims description 7
- 229910005542 GaSb Inorganic materials 0.000 claims description 6
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 4
- 229910000673 Indium arsenide Inorganic materials 0.000 claims description 4
- 229910002367 SrTiO Inorganic materials 0.000 claims description 4
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 79
- 239000010410 layer Substances 0.000 description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000000295 emission spectrum Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005566 electron beam evaporation Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Description
Claims (9)
- 基板に量子ドット膜層を製造することと、
前記量子ドット膜層に第1保護膜を製造することと、
前記第1保護膜にパターン化配列を製造することと、
前記第1保護膜及び前記パターン化配列に第2保護膜を製造し、中間体を得ることと、
前記中間体をアニーリング処理し、前記基板において量子ドット構造を得ることと、
を含む、ことを特徴とする量子ドット構造の製造方法であって、
前記パターン化配列の材料はTiO 2 、Al、HfO 2 、Si 3 N 4 、SrTiO 3 から選ばれるいずれか1種であり、前記パターン化配列の厚みは40nm〜300nmであり、前記パターン化配列の長さ及び/又は幅は10nm〜10μmである、ことを特徴とする製造方法。 - 基板に量子ドット膜層を製造することと、
前記量子ドット膜層に第1保護膜を製造することと、
前記第1保護膜にパターン化配列を製造することと、
前記第1保護膜及び前記パターン化配列に第2保護膜を製造し、中間体を得ることと、
前記中間体をアニーリング処理し、前記基板において量子ドット構造を得ることと、
を含む、ことを特徴とする量子ドット構造の製造方法であって、
前記量子ドット膜層の材料はInAs、InGaAs、InGaAlAs、InSb、GaSb、InPから選ばれるいずれか1種であり、前記量子ドット膜層の成長温度は300℃〜550℃であり、前記量子ドット膜層の厚みは1.4ML〜10MLであり、前記量子ドット膜層における量子ドットの密度は10 8 cm −2 〜10 11 cm −2 である、ことを特徴とする製造方法。 - 基板に量子ドット膜層を製造することと、
前記量子ドット膜層に第1保護膜を製造することと、
前記第1保護膜にパターン化配列を製造することと、
前記第1保護膜及び前記パターン化配列に第2保護膜を製造し、中間体を得ることと、
前記中間体をアニーリング処理し、前記基板において量子ドット構造を得ることと、
を含む、ことを特徴とする量子ドット構造の製造方法であって、
前記第1保護膜に前記パターン化配列を製造する方法は、具体的には、
前記第1保護膜に前駆体膜層を製造することと、
レーザー直接描画プロセスを用いて前記前駆体膜層に対するパターン化処理を行い、前記前駆体膜層を前記パターン化配列及び前記パターン化配列の周りを取り囲む前駆体残膜に変えることと、
前記前駆体残膜を剥離し、前記第1保護膜に前記パターン化配列を形成することと、
を含む、ことを特徴とする製造方法。 - 前記前駆体膜層の材料はTiであり、前記前駆体膜層の厚みは40nm〜300nmであり、前記パターン化配列の長さ及び/又は幅は100nm〜500nmである、ことを特徴とする請求項3に記載の製造方法。
- 基板に量子ドット膜層を製造することと、
前記量子ドット膜層に第1保護膜を製造することと、
前記第1保護膜にパターン化配列を製造することと、
前記第1保護膜及び前記パターン化配列に第2保護膜を製造し、中間体を得ることと、
前記中間体をアニーリング処理し、前記基板において量子ドット構造を得ることと、
を含む、ことを特徴とする量子ドット構造の製造方法であって、
前記第1保護膜に前記パターン化配列を製造する方法は、具体的には、
前記第1保護膜にフォトレジスト層を製造することと、
リソグラフィープロセス又は電子ビームリソグラフィープロセスを用いて前記フォトレジスト層をパターン化処理し、前記パターン化配列の形状にマッチする凹孔を形成することと、
前記凹孔内にパターン化膜層を蒸着させることと、
前記フォトレジスト層を剥離し、前記第1保護膜に前記パターン化配列を形成することと、
を含む、ことを特徴とする製造方法。 - 前記パターン化膜層の材料はTiO2、Al、HfO2、Si3N4、SrTiO3から選ばれるいずれか1種であり、前記パターン化膜層の厚みは40nm〜300nmであり、リソグラフィープロセスを用いて前記フォトレジスト層をパターン化処理する時、前記パターン化配列の長さ及び/又は幅は200nm〜10μmであり、電子ビームリソグラフィープロセスを用いて前記フォトレジスト層をパターン化処理する時、前記パターン化配列の長さ及び/又は幅は10nm〜200nmである、ことを特徴とする請求項5に記載の製造方法。
- 前記第1保護膜及び前記第2保護膜の材料はいずれもSiO2であり、前記第1保護膜の厚みは5nm〜50nmであり、前記第2保護膜の厚みは50nm〜300nmである、ことを特徴とする請求項1乃至6のいずれか1項に記載の製造方法。
- 前記中間体をアニーリング処理するアニーリング温度は550℃〜1000℃であり、アニーリング時間は30s〜10minである、ことを特徴とする請求項1乃至7のいずれか1項に記載の製造方法。
- 前記基板の材料はGaAs、GaSb、InPから選ばれるいずれか1種である、ことを特徴とする請求項1乃至8のいずれか1項に記載の製造方法。
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US10840676B2 (en) * | 2018-05-10 | 2020-11-17 | X Development Llc | Optoelectronic devices having spatially varying distribution of quantum confined nanostructures |
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JPH08288480A (ja) * | 1995-04-12 | 1996-11-01 | Sony Corp | シリコン量子ドットの製造方法 |
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