Role of TCO Films in Improving the Efficiency of CdS/MoS2 Heterojunction Solar Cells

Authors B. Zaidi1 , M.S. Ullah2 , B. Hadjoudja3, S. Gagui3, N. Houaidji3, B. Chouial3, C. Shekhar4

1Department of Physics, Faculty of Material Sciences, University of Batna 1, Batna, Algeria

2Department of Electrical and Computer Engineering, Florida Polytechnic University, Lakeland, USA

3Laboratory of Semiconductors, Department of Physics, University of Badji-Mokhtar, Annaba, Algeria

4Department of Applied Physics, Amity University Gurgaon, Haryana, 122413 India

Issue Volume 11, Year 2019, Number 2
Dates Received 17 December 2018; revised manuscript received 02 April 2019; published online 15 April 2019
Citation B. Zaidi, M.S. Ullah, B. Hadjoudja, et al., J. Nano- Electron. Phys. 11 No 2, 02030 (2019)
PACS Number(s) 84.60.Jt,
Keywords CdS/MoS2, Zinc oxide (10) , Lead oxide, Solar cells (17) , Capacitance-voltage (3) , SCAPS-1D (21) .

Thin film solar cell is a second generation solar cell that is made by depositing one or more thin layers. Debutant analysis of the parameters impeding the efficiency of the CdS/MoS2 heterojunction based photovoltaic device is the chief novelty of the present report. In this work, we investigated the effect of Transparent Conductive Oxide (TCO) utilizing zinc oxide (ZnO) or lead oxide (PbO) antireflective thin film (ARC) on the characteristics of CdS/MoS2 heterojunction solar cell (short circuit current density Jsc, open circuit voltage VCO, power-voltage (P-V) and capacitance-voltage (С-V)). All these options are implemented in the one-dimensional numerical simulation program SCAPS.The results obtained show that as a result of the use of TCO, the short circuit current density Jsc decreases as a function of the applied voltage for both cells. The decrease in the current density is modest below 0.6 V and sharper above. On the other hand, the power density increases almost linearly to a maximum of ~ 3.83 and 3.29 mW/cm2 for ZnO and PbO TCO, respectively. The variation in the capacitance with the voltage is similar to the variation of the current density for both configurations and we found that the efficiency of ZnO coating solar cells is higher than of cells coated with PbO.

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