Premium
Graphene‐Skeleton Heat‐Coordinated and Nanoamorphous‐Surface‐State Controlled Pseudo‐Negative‐Photoconductivity of Tiny SnO 2 Nanoparticles
Author(s) -
Ding Longwei,
Liu Nishuang,
Li Luying,
Wei Xing,
Zhang Xianghui,
Su Jun,
Rao Jiangyu,
Yang Congxing,
Li Wenzhi,
Wang Jianbo,
Gu Haoshuang,
Gao Yihua
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201500804
Subject(s) - materials science , photoconductivity , graphene , nanoparticle , absorption (acoustics) , nanotechnology , optoelectronics , chemical engineering , composite material , engineering
SnO 2 nanoparticles display a pseudo‐negative‐photoconductivity (PsdNPC) effect, which shows that their resistance increases under light irradiation via a heating effect. The PsdNPC originates from intensive electron scattering of the nanoamorphous surface state of the SnO 2 nanoparticles, resulting in a small inner current and a large absorption of moisture, leading to a large surface current. Graphene as the inner skeleton can shorten the response and recovery times.