Transient analysis of photomultiplication-type organic photodiodes
نویسندگان
چکیده
Photomultiplication-type organic photodetectors have emerged as a class of next generation solution-processed with high gain. Despite this promising feature, the reported photodectors still suffer from relatively large dark currents at bias voltages. To overcome drawback, mechanistic understanding photomultiplication effect in photodiodes is required. In work, we advanced performance photomultiplication-type by tuning active layer composition and interfacial layers. The optimized devices exhibit small flat current–voltage curves under reverse condition up to −10 V. also reached an ultra-high responsivity 23.6 A/W specific detectivity 1.04 × 10 12 Jones More importantly, investigated process multiple transient techniques revealed that photoconductive gain slow process, which relies on photo-Schottky enabled charge carrier tunneling accumulation holes. Furthermore, demonstrated prototypical pulsed-light detection based devices, showed great potential for real applications.
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ژورنال
عنوان ژورنال: Applied physics reviews
سال: 2022
ISSN: ['1931-9401']
DOI: https://doi.org/10.1063/5.0083361