Photodiode Response in a CH 3 NH 3 PbI 3 /CH 3 NH 3 SnI 3 Heterojunction

Here we report another surprising feature of the methylammonium metal halide material family, the phototunability of the diode response of a heterojunction made of CH NH PbI and its close relative, CH NH SnI . In the dark state the device behaves as a diode, with the Sn homologue acting as the "...

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Veröffentlicht in:ACS applied materials & interfaces 2017-03, Vol.9 (11), p.10198-10202
Hauptverfasser: Spina, Massimo, Mihály, László, Holczer, Károly, Náfrádi, Bálint, Pisoni, Andrea, Forró, László, Horváth, Endre
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container_end_page 10202
container_issue 11
container_start_page 10198
container_title ACS applied materials & interfaces
container_volume 9
creator Spina, Massimo
Mihály, László
Holczer, Károly
Náfrádi, Bálint
Pisoni, Andrea
Forró, László
Horváth, Endre
description Here we report another surprising feature of the methylammonium metal halide material family, the phototunability of the diode response of a heterojunction made of CH NH PbI and its close relative, CH NH SnI . In the dark state the device behaves as a diode, with the Sn homologue acting as the "p" side. The junction is extremely sensitive to illumination. A complete reversal of the diode polarity, the first observation of its kind, is seen when the junction is exposed to red laser light of 25 mW/cm or larger power density. This finding opens up the possibility for a novel class of optoelectronic devices.
doi_str_mv 10.1021/acsami.6b12392
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title Photodiode Response in a CH 3 NH 3 PbI 3 /CH 3 NH 3 SnI 3 Heterojunction
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