Reverse bias breakdown and photocurrent gain in CH3NH3PbBr3 films
Perovskite films are promising candidates for fast, sensitive, and large area photodetectors. A gain in perovskite based detectors has been observed in several architectures, but a model describing the underlying mechanism is still missing or at least incomplete. Here, we present measurements of CH3...
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| Veröffentlicht in: | Applied physics letters 2022-03, Vol.120 (11) |
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| container_title | Applied physics letters |
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| creator | Auf der Maur, M. Matteocci, F. Di Carlo, A. Testa, M. |
| description | Perovskite films are promising candidates for fast, sensitive, and large area photodetectors. A gain in perovskite based detectors has been observed in several architectures, but a model describing the underlying mechanism is still missing or at least incomplete. Here, we present measurements of CH3NH3PbBr3 films under reverse bias exhibiting breakdown at 4–5 V and small photocurrent gain
≲ 2, which based on a phenomenological model, we explain tentatively by tunnel-assisted injection from the TiO2 electron transport layer and carrier multiplication, mediated by the electric field due to mobile ions. |
| doi_str_mv | 10.1063/5.0082425 |
| format | Article |
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| ispartof | Applied physics letters, 2022-03, Vol.120 (11) |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Bias Breakdown Electric fields Electron transport Multiplication Perovskites Photoelectric effect Photoelectric emission Titanium dioxide |
| title | Reverse bias breakdown and photocurrent gain in CH3NH3PbBr3 films |
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