JP2019535119A - 量子ドット層を含むイメージセンサ - Google Patents
量子ドット層を含むイメージセンサ Download PDFInfo
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 311
- 238000006243 chemical reaction Methods 0.000 claims abstract description 73
- 239000000758 substrate Substances 0.000 claims abstract description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 238000002834 transmittance Methods 0.000 claims description 11
- 229910004613 CdTe Inorganic materials 0.000 claims description 3
- 229910004262 HgTe Inorganic materials 0.000 claims description 3
- 241000764773 Inna Species 0.000 claims description 3
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 claims description 3
- 229910007709 ZnTe Inorganic materials 0.000 claims description 3
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 3
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 223
- 239000011258 core-shell material Substances 0.000 description 18
- 238000009792 diffusion process Methods 0.000 description 14
- 238000007667 floating Methods 0.000 description 14
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
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- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 7
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- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 7
- 239000005642 Oleic acid Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H01L27/144—Devices controlled by radiation
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- H01L27/14643—Photodiode arrays; MOS imagers
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Abstract
Description
本出願は、2017年08月14日付の韓国特許出願第10−2017−0103143号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み込まれる。
P2 第2可視光
110 基板
120 光電変換素子
130 配線層
140R 赤色カラーフィルタ
140G 緑色カラーフィルタ
140B 青色カラーフィルタ
150 量子ドット層
151 量子ドット
160 マイクロレンズ
Claims (13)
- 基板上に複数のピクセル領域に対応して形成される光電変換素子と、
前記光電変換素子が形成された基板上に形成される配線層と、
前記配線層上に形成され、前記光電変換素子に対応して形成されるカラーフィルタと、
前記カラーフィルタ上に形成され、光を吸収して特定の波長領域の可視光として発光する量子ドット層とを含むことを特徴とする、量子ドット層を含むイメージセンサ。 - 前記光電変換素子には第1可視光及び第2可視光が入射され、
前記第1可視光は、前記量子ドット層を介して透過する可視光であり、前記第2可視光は、前記量子ドット層に吸収されて発光する特定の波長領域の可視光であることを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。 - 前記量子ドット層は、紫外線波長帯域の光をエネルギーダウンシフト(energy−down−shift)させて前記第2可視光を発光することを特徴とする、請求項2に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、赤外線波長帯域の光をエネルギーアップシフト(energy−up−shift)させて前記第2可視光を発光することを特徴とする、請求項2に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、青色、緑色及び赤色の可視光線波長帯域の光は透過させ、紫外線波長帯域の光又は赤外線波長帯域の光のみを選択的に吸収して青色の可視光を増幅させる青色量子ドット層であることを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、青色、緑色及び赤色の可視光線波長帯域の光は透過させ、紫外線波長帯域の光又は赤外線波長帯域の光のみを選択的に吸収して赤色の可視光を増幅させる赤色量子ドット層であることを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、青色、緑色及び赤色の可視光線波長帯域の光は透過させ、紫外線波長帯域の光又は赤外線波長帯域の光のみを選択的に吸収して緑色の可視光を増幅させる緑色量子ドット層であることを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、量子ドットの濃度によって透過率(transmittance)が制御されることを特徴とする、請求項2に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、CdS、CdSe、CdTe、ZnS、ZnSe、ZnTe、HgS、HgSe、HgTe、CdSeS、CdSeTe、CdSTe、ZnSeS、ZnSeTe、ZnSTe、HgSeS、HgSeTe、HgSTe、CdZnS、CdZnSe、CdZnTe、CdHgS、CdHgSe、CdHgTe、HgZnS、HgZnSe、HggZnTe、CdZnSeS、CdZnSeTe、CdZnSTe、CdHgSeS、CdHgSeTe、CdHgSTe、HgZnSeS、HgZnSeTe、HgZnSTe、GaN、GaP、GaAs、AlN、AlP、AlAs、InN、InP、InAs、GaNP、GaNAs、GaPAs、AlNP、AlNAs、AlPAs、InNP、InNAs、InPAs、GaAlNP、GaAlNAs、GaAlPAs、GaInNP、GaInNAs、GaInPAs、InAlNP、InAlNAs、InAlPAs、及びそれらの組み合わせのうちの少なくともいずれか1つを含むことを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層は、CdZnS/ZnSコア/シェル量子ドット、またはMn−doped CdZnS/ZnSコア/シェル量子ドットを含むことを特徴とする、請求項9に記載の量子ドット層を含むイメージセンサ。
- 前記光電変換素子は、シリコンベースのフォトダイオードであることを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。
- 前記量子ドット層を含むイメージセンサは、
前記量子ドット層の上部又は下部にマイクロレンズをさらに含むことを特徴とする、請求項1に記載の量子ドット層を含むイメージセンサ。 - 基板上に複数のピクセル領域に対応して形成される光電変換素子と、
前記光電変換素子が形成された基板上に形成される配線層と、
前記配線層上に形成され、前記光電変換素子に対応して形成されるカラーフィルタとを含み、
前記カラーフィルタのうちの少なくとも1つは、光を吸収して特定の波長領域の可視光として発光する量子ドットを含むことを特徴とする、量子ドットを含むイメージセンサ。
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