Photodiode Response in a CH3NH3PbI3/CH3NH3SnI3 Heterojunction.
作者： Massimo Spina , László Mihály , Károly Holczer , Bálint Náfrádi , Andrea Pisoni
关键词: Step recovery diode 、 Polarity (physics) 、 Optics 、 Halide 、 Materials science 、 Power density 、 Dark state 、 Photodiode 、 Diode 、 Optoelectronics 、 Heterojunction
摘要: Here we report another surprising feature of the methylammonium metal halide material family, phototunability diode response a heterojunction made CH3NH3PbI3 and its close relative, CH3NH3SnI3. In dark state device behaves as diode, with Sn homologue acting “p” side. The junction is extremely sensitive to illumination. A complete reversal polarity, first observation kind, seen when exposed red laser light 25 mW/cm2 or larger power density. This finding opens up possibility for novel class optoelectronic devices.
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