Effects of working pressure and power on photovoltaic and defect properties of magnetron sputtered Sb<sub>2</sub>Se<sub>3</sub> thin-film solar cells

Youyang Wang; Junda Li; Yuanjing Chen; Jianhong Zhou; Jiayan Zhang; Wangchen Mao; Shiqi Zheng; Yuhan Pan; Yiqi Liu; Kaijie Dai; Xiaobo Hu; Jiahua Tao; Guoen Weng; Jinchun Jiang; Shaoqiang Chen; Junhao Chu

doi:10.1364/AO.382805

Applied Optics
Vol. 59,
Issue 4,
pp. 948-954
(2020)
•https://doi.org/10.1364/AO.382805

Effects of working pressure and power on photovoltaic and defect properties of magnetron sputtered Sb₂Se₃ thin-film solar cells

Youyang Wang, Junda Li, Yuanjing Chen, Jianhong Zhou, Jiayan Zhang, Wangchen Mao, Shiqi Zheng, Yuhan Pan, Yiqi Liu, Kaijie Dai, Xiaobo Hu, Jiahua Tao, Guoen Weng, Jinchun Jiang, Shaoqiang Chen, and Junhao Chu

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Youyang Wang, Junda Li, Yuanjing Chen, Jianhong Zhou, Jiayan Zhang, Wangchen Mao, Shiqi Zheng, Yuhan Pan, Yiqi Liu, Kaijie Dai, Xiaobo Hu, Jiahua Tao, Guoen Weng, Jinchun Jiang, Shaoqiang Chen, and Junhao Chu, "Effects of working pressure and power on photovoltaic and defect properties of magnetron sputtered Sb₂Se₃ thin-film solar cells," Appl. Opt. 59, 948-954 (2020)

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Abstract

Antimony selenide (${\text{Sb}_2}{\text{Se}_3}$) is an emerging material with potential applications in photovoltaics, while magnetron sputtering is an important method in material growth. In this study, ${\text{Sb}_2}{\text{Se}_3}$ thin films, prepared by the magnetron sputtering technique with varied working pressures and sputtering powers, were fabricated into solar cells with a structure of $\text{glass}/\text{ITO}/\text{CdS}/{\text{Sb}_2}{\text{Se}_3}/\text{Au}$. The current density versus voltage measurements and x-ray diffraction were introduced to compare the photovoltaic and structural properties of the cell samples. Characterization and identification of the defects in ${\text{Sb}_2}{\text{Se}_3}$ thin films were investigated by admittance measurements. The ${\text{Sb}_2}{\text{Se}_3}$ cell samples prepared with appropriate sputtering power (about 60 W) or working pressure (about 0.4 Pa) were found to own better crystal qualities and lower defect densities, which may be the reason for better efficiency.

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Cell Number	Growth Condition	$V_{oc}$ (V)	$J_{s c} (mA / {cm}^{2})$	FF (%)	PCE (%)
#1	0.5 Pa 50 W	0.30	1.03	40.19	0.124
#2	0.5 Pa 60 W	0.28	1.48	30.87	0.127
#3	0.5 Pa 70 W	0.29	0.90	40.29	0.105
#4	50 W 0.4 Pa	0.32	2.14	43.07	0.292
#5(#1)	50 W 0.5 Pa	0.30	1.03	40.19	0.124
#6	50 W 0.6 Pa	0.31	1.60	34.83	0.171

Cell Number	Growth Condition	$E_{A}$ (meV)	$N_{t}$ ( ${cm}^{- 3}$ )	$σ_{p}$ ( ${cm}^{2}$ )	$τ$ (µs)	PCE (%)
#1	0.5 Pa 50 W	400.18	$1.25 \times 10^{17}$	$7.29 \times 10^{- 16}$	$1.10 \times 10^{- 3}$	0.124
#2	0.5 Pa 60 W	413.11	$6.63 \times 10^{16}$	$5.57 \times 10^{- 16}$	$2.71 \times 10^{- 3}$	0.127
#3	0.5 Pa 70 W	422.97	$7.95 \times 10^{16}$	$1.14 \times 10^{- 16}$	$1.10 \times 10^{- 2}$	0.105
#4	50 W 0.4 Pa	394.52	$4.17 \times 10^{16}$	$5.46 \times 10^{- 16}$	$4.39 \times 10^{- 3}$	0.292
#5(#1)	50 W 0.5 Pa	400.18	$1.25 \times 10^{17}$	$7.29 \times 10^{- 16}$	$1.10 \times 10^{- 3}$	0.124
#6	50 W 0.6 Pa	355.49	$3.33 \times 10^{16}$	$4.69 \times 10^{- 17}$	$6.40 \times 10^{- 2}$	0.170

Cell Number	Growth Condition	$V_{oc}$ (V)	$J_{s c} (mA / {cm}^{2})$	FF (%)	PCE (%)
#1	0.5 Pa 50 W	0.30	1.03	40.19	0.124
#2	0.5 Pa 60 W	0.28	1.48	30.87	0.127
#3	0.5 Pa 70 W	0.29	0.90	40.29	0.105
#4	50 W 0.4 Pa	0.32	2.14	43.07	0.292
#5(#1)	50 W 0.5 Pa	0.30	1.03	40.19	0.124
#6	50 W 0.6 Pa	0.31	1.60	34.83	0.171

Cell Number	Growth Condition	$E_{A}$ (meV)	$N_{t}$ ( ${cm}^{- 3}$ )	$σ_{p}$ ( ${cm}^{2}$ )	$τ$ (µs)	PCE (%)
#1	0.5 Pa 50 W	400.18	$1.25 \times 10^{17}$	$7.29 \times 10^{- 16}$	$1.10 \times 10^{- 3}$	0.124
#2	0.5 Pa 60 W	413.11	$6.63 \times 10^{16}$	$5.57 \times 10^{- 16}$	$2.71 \times 10^{- 3}$	0.127
#3	0.5 Pa 70 W	422.97	$7.95 \times 10^{16}$	$1.14 \times 10^{- 16}$	$1.10 \times 10^{- 2}$	0.105
#4	50 W 0.4 Pa	394.52	$4.17 \times 10^{16}$	$5.46 \times 10^{- 16}$	$4.39 \times 10^{- 3}$	0.292
#5(#1)	50 W 0.5 Pa	400.18	$1.25 \times 10^{17}$	$7.29 \times 10^{- 16}$	$1.10 \times 10^{- 3}$	0.124
#6	50 W 0.6 Pa	355.49	$3.33 \times 10^{16}$	$4.69 \times 10^{- 17}$	$6.40 \times 10^{- 2}$	0.170

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