Cu2ZnSnS4:graphene oxide nanocomposites based photoresponse devices

被引:10
作者
Al-Hazmi, Faten [1 ]
Yakuphanoglu, F. [1 ,2 ,3 ]
机构
[1] King Abdulaziz Univ, Fac Sci Girls, Dept Phys, Jeddah 21413, Saudi Arabia
[2] Firat Univ, Dept Phys, Fac Sci, TR-23169 Elazig, Turkey
[3] Firat Univ, Nanosci & Nanotechnol Lab, TR-23169 Elazig, Turkey
关键词
Sensors; Photodiode; Nanocomposites; BARRIER DIODES SBDS; THIN-FILMS; SOLAR-CELLS; VOLTAGE CHARACTERISTICS; CONDUCTANCE TECHNIQUE; CAPACITANCE-VOLTAGE; SERIES RESISTANCE; INTERFACE STATES; SCHOTTKY DIODES; FREQUENCY;
D O I
10.1016/j.jallcom.2015.08.238
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Graphene oxide: Cu2ZnSnS4 nanocomposites were synthesized by the chemical method to fabricate photodiodes. The structural properties of the nanocomposites were analyzed using a Scanning electron microscopy (SEM) and X-ray Energy Dispersive energy (EDS) technique. Electrical and photoresponse properties of the p-Si/graphene oxide: Cu2ZnSnS4 nanocomposites diodes were investigated by current-voltage and capacitance-conductance-voltages characteristics under dark and various illumination conditions. The photocurrent of the diodes is larger than the dark current suggesting that the prepared diodes exhibited photodiode behavior. The photoconducting mechanism of the diodes was analyzed and it was found that the photoconduction mechanism is controlled by the monomolecular recombination. The diodes exhibited also a photocapacitor behavior. The photoelectrical properties of Au/GO:Cu2ZnSnS4/p-Si/Al devices indicate that the prepared diodes can be used both as a photodiode and a photocapacitor in optoelectronic device applications. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:561 / 569
页数:9
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