• 文献标题:   Graphene-Skeleton Heat-Coordinated and Nanoamorphous-Surface-State Controlled Pseudo-Negative-Photoconductivity of Tiny SnO2 Nanoparticles
  • 文献类型:   Article
  • 作  者:   DING LW, LIU NS, LI LY, WEI X, ZHANG XH, SU J, RAO JY, YANG CX, LI WZ, WANG JB, GU HS, GAO YH
  • 作者关键词:  
  • 出版物名称:   ADVANCED MATERIALS
  • ISSN:   0935-9648 EI 1521-4095
  • 通讯作者地址:   Huazhong Univ Sci Technol
  • 被引频次:   12
  • DOI:   10.1002/adma.201500804
  • 出版年:   2015

▎ 摘  要

SnO2 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 SnO2 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.