Modulated photoresponse in a naturally-occurring two-dimensional material; Applied Materials Today; Vol. 42
| Источник: | Applied Materials Today.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 42.— 2025.— Article number 102592, 9 p. |
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| Другие авторы: | , , , , , , , , , , , , , |
| Примечания: | Engineering light-matter interactions in nanoscale systems is crucial for optoelectronics. In this context, we discovered a remarkable photoresponse effect in a few-layer arsenic trisulfide (As2S3), a naturally occurring van der Waals semiconductor. Our results evidence an exceptional photoresponse in As2S3, with surface potential changes of up to 80 mV under low-intensity white light illumination due to the formation of self-trapped excitons that generate localized dipoles. This mechanism enables the efficient modulation of 2D As2S3’s surface potential without inducing free charge carriers, highlighting its potential as a photoresponsive material. We exploited this distinctive photoresponse to enhance the photocatalytic conversion of 4-nitrobenzenethiol to 4,4′-dimercaptoazobenzene by silver nanowires (AgNWs) deposited on the 2D material. The localized light-induced dipoles at the 2D material interface enhanced the plasmonic photocatalytic efficiency of AgNWs by 71 %. The ability to photo-modulate collective electron oscillations and charge transfer in AgNWs indicates that As2S3 is a promising 2D material for optoelectronic applications, including photoswitches, photoelectric devices, and photovoltaic systems Текстовый файл AM_Agreement |
| Язык: | английский |
| Опубликовано: |
2025
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| Предметы: | |
| Online-ссылка: | https://doi.org/10.1016/j.apmt.2025.102592 |
| Формат: | Электронный ресурс Статья |
| Запись в KOHA: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=681299 |