Sulfur and Nitrogen co-doped graphene quantum dot decorated ZnO nanorod/polymer hybrid flexible device for photosensing applications

被引：43
作者：
Hmar, Jehova Jire L. [1 ]
Majumder, Tanmoy [1 ]
Dhar, Saurab [1 ]
Mondal, Suvra Prakash [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Agartala 799046, India
来源：
THIN SOLID FILMS | 2016年 / 612卷
关键词：
Graphene quantum dots (GQDs); Nitrogen; Sulfur co-doped graphene quantum dots (S; N-GQDs); ZnO nanorods; Photoresponse; Incident photon to electron conversion efficiency (IPCE); Photoresponsivity and detectivity; PHOTOVOLTAIC DEVICES; ENERGY-CONVERSION; NANOTUBE ARRAYS; VISIBLE-LIGHT; LUMINESCENT S; SOLAR-CELLS; CARBON DOTS; NANORODS; TRANSPARENT; DEPOSITION;
D O I：
10.1016/j.tsf.2016.06.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
S and N co-doped graphene quantum dots (S,N-GQDs) have been synthesized by a hydrothermal process. S,N-GQDs are made up of 1-5 monolayer of graphene with average diameter 13.3 nm. The absorption peaks at 336 and 621 nm, are attributed to n -> Pi* transitions of electrons in C=O and S=O bonds, respectively. S,N-GQDs are highly luminescent and showed excitation dependent emission behaviors. Hybrid photosensing device has been fabricated with S,N-GQD sensitized ZnO nanorods and a conjugated polymer poly(3-hexylthiophene) (P3HT). S,N-GQD decorated ZnO nanorod demonstrated higher photoresponse compared to pristine ZnO nanorod based device. S,N-GQD/ZnO nanorod hybrid device showed superior incident photon to electron conversion efficiency (IPCE), photoresponsivity and detectivity compared to the control samples. The flexibility study of the samples has been monitored by measuring current-voltage characteristics at different bending angles. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：274 / 283
页数：10
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