PHOTOSENSOR HAVING PHOTOELECTRIC CONVERSION LAYER INCLUDING PEROVSKITE TYPE COMPOUND AND PHOTODETECTOR DEVICE USING THE SAME

To provide an optical sensor capable of discriminating and detecting light in a plurality of wavelength ranges by one element.SOLUTION: A light sensor (10) of the present disclosure includes a first electrode (1), a second electrode (3) disposed to face the first electrode (1), a photoelectric conve...

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Bibliographische Detailangaben
Hauptverfasser: UCHIDA RYUSUKE, SUZUKA TOSHIO, MATSUI TASUKE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an optical sensor capable of discriminating and detecting light in a plurality of wavelength ranges by one element.SOLUTION: A light sensor (10) of the present disclosure includes a first electrode (1), a second electrode (3) disposed to face the first electrode (1), a photoelectric conversion layer (2) disposed between the first electrode (1) and the second electrode (3) and converting incident light into a charge. At least one electrode selected from a group consisting of the first electrode (1) and the second electrode (3) has translucency. The photoelectric conversion layer (2) includes a perovskite type compound. The fluorescence spectrum of the perovskite type compound has a first peak and a second peak located on the longer wavelength side than the first peak. The photoelectric conversion layer (2) is in ohmic contact with each of the first electrode (1) and the second electrode (3).SELECTED DRAWING: Figure 1 【課題】1つの素子で複数の波長域の光を区別して検出することができる光センサを提供する。【解決手段】本開示の光センサ(10)は、第1電極(1)と、第1電極(1)に対向して配置された第2電極(3)と、第1電極(1)と第2電極(3)との間に配置され、入射光を電荷に変換する光電変換層(2)と、を備える。第1電極(1)及び第2電極(3)からなる群より選ばれる少なくとも1つの電極が透光性を有する。光電変換層(2)は、ペロブスカイト型化合物を含む。ペロブスカイト型化合物の蛍光スペクトルは、第1ピークと、第1ピークよりも長波長側に位置する第2ピークとを有する。光電変換層(2)と、第1電極(1)及び第2電極(3)のそれぞれとがオーミック接触している。【選択図】図1