Effect of Grephene on Separation and Transport Mechanism of Photogenerated Charges
Journal Title: 河南科技大学学报（自然科学版） - Year 2016, Vol 37, Issue 4
Abstract
Based on various mass fractions( 0. 4%,0. 8%,1. 2%,1. 6%,2. 0% and 2. 4%) of reduced graphene oxide( RGO),the composite system of Cu4Bi4S9( CBS) and RGO( CBS-RGO) were synthesized.Then two types of heterojunction Zn2SnO4/ CBS( ZTO / CBS) and ZTO / CBS-RGO( ZTO / CBS-RGO),as well as its bulk heterojunction solar cells were fabricated. For CBS-RGO,the photovoltaic response increased gradually with the mass fractions of RGO from 0. 4% to 1. 6%. Above 1. 6%,the photovoltaic response decreased gradually. The surface photovoltage spectroscopy test results show that ZTO / CBS-RGO exhibits the higher photovoltaic response than ZTO / CBS. Under the positive bias electric field inducing,ZTO / CBS-RGO also presents the higher photovoltaic response than ZTO / CBS. Besides,the highest photoelectric conversion efficiencies of two types of bulk heterojunction solar cells of ZTO / CBS and ZTO / CBS-RGO is 1. 2% and2. 8%,respectively. It is suggested that the composite RGO can improve the separation efficiency of photogenerated charges.
Authors and Affiliations
Taotao ZHAO, Gaofeng ZHAO
Keywords
Related Articles
- EP ID EP477172
- DOI 10.15926/j.cnki.issn1672-6871.2016.04.018
- Views 71
- Downloads 0
Solvothermal Synthesis and Optical Property of PbTe Nanocrystals
Lead telluride ( PbTe) nanocrystals were synthesized by solvothermal reaction method.The structure and composition of PbTe nanocrystals were characterized.The effects of reaction temperature on the morphology was investi...
Development of Small Wind External Rotor Permanent-magnet Generator Experimental Platform
Small wind external rotor permanent magnet generator( PMG) experimental platform was developed for testing its performance. The experimental platform was mainly composed of hardware unit and software unit.The hardware wa...
Experimental Study of Vertical Mechanical Properties of Scrap Tire Pads
The vertical mechanical experiments of scrap tire pads ( STP) made of three common tire types of all season tire and snow tire were conducted.The effects of width, length and types of tire on the vertical ultimate streng...
Preparation and Microwave Dielectric Properties of Cold Sintering Ceramics Materials
The NaCl, Li2MoO4, Al N-Na Cl and Zn2SiO4-NaCl materials were sintered by cold sintering method.The dielectric properties of cold sintering materials were investigated at microwave frequency ranges.The results show that...
Surface Structure and Photocatalytic Activity of BiO Cl Modulated by Hydroxyl
BiOCl/Bi2O3 composites were synthesized by the treatment of BiOCl with NaOH solution and its photocatalytic properties were studied. The samples were characterized by X-ray diffraction ( XRD) , scanning electron microsco...