JP6433852B2 - 化合物、有機光電変換素子、及び固体撮像素子 - Google Patents
化合物、有機光電変換素子、及び固体撮像素子 Download PDFInfo
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- JP6433852B2 JP6433852B2 JP2015108875A JP2015108875A JP6433852B2 JP 6433852 B2 JP6433852 B2 JP 6433852B2 JP 2015108875 A JP2015108875 A JP 2015108875A JP 2015108875 A JP2015108875 A JP 2015108875A JP 6433852 B2 JP6433852 B2 JP 6433852B2
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Classifications
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- H10K85/60—Organic compounds having low molecular weight
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- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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Description
実施形態の化合物として、下記一般式(1)で表される化合物が挙げられる。
例えば、化合物のHOMO準位及びLUMO準位を深くする場合は、R1、R2としてトリフルオロメチル基を選択する。
また、例えば、化合物の耐熱性を上げる場合は、R1、R2としてフェニル基を選択する。
先ず、窒素気流下において、N−Phenyl−O−phenylenediamineをN−メチルピロリドン(NMP)に溶解する。その後、冷却し、4−Bromobenzoyl chlorideをNMPに溶解して滴下した後、室温で数時間撹拌する。その後、水を加えて反応を停止し、酢酸エチルを用いて抽出する。その後、有機層を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥する。その後、減圧濃縮することで、下記式(3)で表される化合物を得る。
陽極3は、単層であってもよいし、異なる仕事関数の材料からなる層を積層したものであってもよい。
陰極8は、単層であってもよいし、異なる仕事関数の材料からなる層を積層したものであってもよい。
先ず、基板2としてガラス基板を準備し、基板2上に、陽極3としてITO等の透明導電膜を、真空蒸着法により成膜する。なお、陽極3を成膜する方法としては、上述した真空蒸着法の他に、スパッタリング法、イオンプレーティング法、メッキ法、塗布法等により行ってもよい。
以上のような工程により、実施形態の有機光電変換素子1を製造することができる。
実施形態の固体撮像素子11は、裏面照射型の光電変換素子である。なお、図2では一例として裏面照射型を図示したが、これに限られず、表面照射型であってもよい。
実施例1の化合物は、上述した実施形態の化合物の合成方法と同様の方法により合成した。
先ず、窒素気流下において、N−Phenyl−O−phenylenediamine(5.7g、30.9mmol)をN−メチルピロリドン(NMP)(23ml)に溶解した。その後、10℃まで冷却し、4−Bromobenzoyl chloride(6.8g、30.9mmol)をNMP(3ml)に溶解して滴下した後、室温で1時間撹拌した。その後、水(50ml)を加えて反応を停止し、酢酸エチル(100ml)を用いて抽出した。その後、有機層を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥した。その後、減圧濃縮することで、上記式(3)で表される化合物を得た。
実施例2の有機光電変換素子は、上述した実施形態の有機光電変換素子1と同じ構成とした。すなわち、実施例2の有機光電変換素子では、陽極と、平坦化層と、電子ブロック層と、光電変換層と、正孔ブロック層と、陰極とが、この順番で積層されている。
なお、正孔ブロック層の材料としてF201を用いた。
実施例3の有機光電変換素子は、実施例2の有機光電変換素子の正孔ブロック層の厚みが3nmであること以外は、実施例2の有機光電変換素子と同様の構成である。
比較例1の有機光電変換素子は、実施例2の有機光電変換素子の正孔ブロック層を省略し、光電変換層と陰極とが隣接して積層されていること以外は、実施例2の有機光電変換素子と同様の構成である。
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