Modulated photoresponse in a naturally-occurring two-dimensional material; Applied Materials Today; Vol. 42

Modulated photoresponse in a naturally-occurring two-dimensional material; Applied Materials Today; Vol. 42

Bibliographic Details
Parent link:Applied Materials Today.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 42.— 2025.— Article number 102592, 9 p.
Other Authors: Garcia Balza A. S. Aura Samid, Rodriguez (Rodriges) Contreras R. D. Raul David, Tran Tuan Hoang, Cheshev D. L. Dmitry Leonidovich, Villa Pineda N. E. Nelson Enrrique, Gorbunova D. A. Darjya Alekseevna, Krasnoshchekova L. A. Lubov Afanasievna, Liu Hao, Yang Bin, Jia Xin, Ma Qiang, Zhang Tao, Chen Jin-Ju, Sheremet E. S. Evgeniya Sergeevna
Summary: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
Language:English
Published: 2025
Subjects:
arsenic trisulfide (As2S3)
photoresponse
2D materials
2D semiconductors
self-trapped exciton
труды учёных ТПУ
электронный ресурс
Online Access:https://doi.org/10.1016/j.apmt.2025.102592
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=681299

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