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  • 文献标题:   Role of S, N co-doped graphene quantum dots as a green photosensitizer with Ag-doped ZnO nanorods for improved electrochemical solar energy conversion
  • 文献类型:   Article
  • 作　　者:   MAJUMDER T, DHAR S, DEBNATH K, MONDAL SP
  • 作者关键词:   zno nanorod, ag doped zno nanorod, photoelectrochemical cell, s n codoped graphene quantum dot, photosensitizer
  • 出版物名称:   MATERIALS RESEARCH BULLETIN
  • ISSN:   0025-5408 EI 1873-4227
  • 通讯作者地址:   Natl Inst Technol
  • 被引频次:   18
  • DOI:   10.1016/j.materresbull.2017.05.004
  • 出版年:   2017

▎ 摘　　要

Photoelectrochemical (PEC) properties of Ag doped ZnO nanorods (Ag-ZnO NRs) have been studied in details. Ag-ZnO NRs photoanodes demonstrated superior photoconversion efficiency (i.e. photon to hydrogen), photoresponse properties, incident-photon-to-current conversion efficiency (IPCE), compared to pristine ZnO nanorods. S and N co-doped graphene quantum dots (S,N-GQDs) were synthesized by hydrothermal process and utilized as a green photosensitizer for further improvement of photoelectrochemical activities. S,N-GQD sensitized nanorods showed photoconversion efficiency (eta) similar to 1.1%, and short circuit photocurrent (Jsc) similar to 0.96 mA/cm(2), which are 3.4 times and 2.7 times higher than ZnO NRs. Sensitization with S,N-GQDs also improved the IPCE value and attained maximum 62.8% at 350 nm, which is 2.2 times higher compared to ZnO NRs. (C) 2017 Elsevier Ltd. All rights reserved.