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A novel approach to utilize thiol reduced graphene oxide as linker molecule for Cu2ZnSnS4 sensitized solar cell.
- Source :
-
International Journal of Hydrogen Energy . Dec2015, Vol. 40 Issue 46, p15933-15939. 7p. - Publication Year :
- 2015
-
Abstract
- A new strategy was proposed to improve the efficiency of Cu 2 ZnSnS 4 (CZTS) sensitized solar cell by utilizing thiol reduced graphene oxide (TrGO) to replace conventional linker molecule, mercaptopropionic acid (MPA). TiO 2 -TrGO-CZTS composite structure formed via the remaining carboxyl and exposing thiol groups in TrGO, which guaranteed stable links between TiO 2 and CZTS. Based on the fabrication of TiO 2 -TrGO-CZTS composite electrode, CZTS sensitized solar device was assembled. Besides, TiO 2 -hydrazine hydrate reduced graphene oxide (HrGO)-CZTS and TiO 2 -MPA-CZTS electrodes as well as the devices were also constructed. Upon measuring the photoelectrochemical and photoelectric performance, it was found that the highest power conversion efficiency of 0.133% was obtained in the case of TiO 2 -TrGO-CZTS, which was enhanced by 27% and 28% compared to HrGO and MPA decorated devices, respectively. The improvement of photoelectric performance was mainly attributed to more excited electrons and less recombined charge. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03603199
- Volume :
- 40
- Issue :
- 46
- Database :
- Academic Search Index
- Journal :
- International Journal of Hydrogen Energy
- Publication Type :
- Academic Journal
- Accession number :
- 111169491
- Full Text :
- https://doi.org/10.1016/j.ijhydene.2015.09.068