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Journal of Photonics for Energy

Effect of indium on photovoltaic property of n-ZnO/p-Si heterojunction device prepared using solution-synthesized ZnO nanowire film
Author(s): Adaikalam Kathalingam; Hyun-Seok Kim; Hyung-Moo Park; Santiyagu Valanarasu; Thaiyan Mahalingam
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Paper Abstract

Preparation of n-ZnO/p-Si heterostructures using solution-synthesized ZnO nanowire films and their photovoltaic characterization is reported. The solution-grown ZnO nanowire film is characterized using scanning electron microscope, electron dispersive x-ray, and optical absorption studies. Electrical and photovoltaic properties of the fabricated heterostructures are studied using e-beam-evaporated aluminum as metal contacts. In order to use transparent contact and to simultaneously collect the photogenerated carriers, sandwich-type solar cells were fabricated using ZnO nanorod films grown on p-silicon and indium tin oxide (ITO) coated glass as ITO/n-ZnO NR/p-Si. The electrical properties of these structures are analyzed from current-voltage (I−V) characteristics. ZnO nanowire film thickness-dependent photovoltaic properties are also studied. Indium metal was also deposited over the ZnO nanowires and its effects on the photovoltaic response of the devices were studied. The results demonstrated that all the samples exhibit a strong rectifying behavior indicating the diode nature of the devices. The sandwich-type ITO/n-ZnO NR/p-Si solar cells exhibit improved photovoltaic performance over the Al-metal-coated n-ZnO/p-Si structures. The indium deposition is found to show enhancement in photovoltaic behavior with a maximum open-circuit voltage (Voc) of 0.3 V and short-circuit current (Isc) of 70×10−6 A under ultraviolet light excitation.

Paper Details

Date Published: 9 December 2015
PDF: 15 pages
J. Photon. Energy. 5(1) 053085 doi: 10.1117/1.JPE.5.053085
Published in: Journal of Photonics for Energy Volume 5, Issue 1
Show Author Affiliations
Adaikalam Kathalingam, Dongguk Univ. (Republic of Korea)
Hyun-Seok Kim, Dongguk Univ. (Republic of Korea)
Hyung-Moo Park, Dongguk Univ. (Republic of Korea)
Santiyagu Valanarasu, Arul Anandar College (India)
Thaiyan Mahalingam, Ajou Univ. (Republic of Korea)


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