• 文献标题:   Direct Growth of Nanocrystalline Graphene/Graphite Transparent Electrodes on Si/SiO2 for Metal-Free Schottky Junction Photodetectors
  • 文献类型:   Article
  • 作  者:   ZHANG ZX, GUO YX, WANG XJ, LI D, WANG FL, XIE SS
  • 作者关键词:   graphene, transparent electrode, schottky junction, photodetector
  • 出版物名称:   ADVANCED FUNCTIONAL MATERIALS
  • ISSN:   1616-301X EI 1616-3028
  • 通讯作者地址:   Tongji Univ
  • 被引频次:   20
  • DOI:   10.1002/adfm.201301924
  • 出版年:   2014

▎ 摘  要

Conventional methods to produce graphene/silicon Schottky junctions inevitably involve graphene transfer and metal deposition, which leads to the techniques being complicated, high-cost, and environmentally unfriendly. It is possible to directly grow hybrid nanocrystalline graphene/graphite transparent electrodes from photoresist on quartz without any catalyst. Due to the source material being photoresist, nanographene/graphite patterns can easily be made on Si/SiO2 structures to form nanographene/silicon Schottky junctions via commercial photolithography and silicon techniques. The obtained Schottky junctions exhibit excellent properties with respect to photodetection, with photovoltage responsivity of 300 V W-1 at a light power of 0.2 W and photovoltage response time of less than 0.5 s. The devices also exhibit an excellent reliability with the photovoltage deviating less than 1% when cycled over 200 times.