Enhanced solar cell performance of Cu2ZnSnSe4 thin films through structural control by using selenide stacked nanolayer in non-toxic selenium atmosphere

Author(s):  
Fang-I Lai ◽  
Jui-Fu Yang ◽  
Yu-Chao Hsu ◽  
Shou-Yi Kuo

Double layer distribution can be observed in Cu2SnZnSe4 (CZTSe) thin films prepared via the selenization of metallic precursors. The double layer structure may cause the back contact of Mo substrates...

Nano Energy ◽  
2016 ◽  
Vol 30 ◽  
pp. 762-770 ◽  
Author(s):  
Wei-Chao Chen ◽  
Cheng-Ying Chen ◽  
Venkatesh Tunuguntla ◽  
Shao Hung Lu ◽  
Chaochin Su ◽  
...  

2012 ◽  
Vol 30 (1) ◽  
pp. 01A157 ◽  
Author(s):  
Jonathan A. Campbell ◽  
Mervyn deBorniol ◽  
Attila J. Mozer ◽  
Peter J. Evans ◽  
Robert P. Burford ◽  
...  

2017 ◽  
Vol 29 (22) ◽  
pp. 9695-9704 ◽  
Author(s):  
Enrico Avancini ◽  
Romain Carron ◽  
Thomas P. Weiss ◽  
Christian Andres ◽  
Melanie Bürki ◽  
...  

Author(s):  
Wafaa Magdy ◽  
Ayaka Kanai ◽  
Mohamed Abdel‑Latif ◽  
Fawzy A Mahmoud ◽  
Essam El Shenawy ◽  
...  

2007 ◽  
Vol 1012 ◽  
Author(s):  
Ana Kanevce ◽  
James R. Sites

AbstractSolar-cell performance degradation due to physical nonuniformities becomes more significant as the thickness of polycrystalline absorbers is reduced. “Voltage” nonuniformities such as those due to band-gap fluctuations, variations in the back-contact proximity, and areas where the absorber is completely depleted can have very significant impact on cell performance. Similarly local shunts can seriously degrade the efficiency. “Current” nonuniformities such as optical defects have generally much less impact. The analysis presented is based on Cu(In,Ga)Se2 cells, but the qualitative results should be applicable to thin-absorber devices in general. For lateral nonuniformity studies, the solar cell is simulated by a two dimensional network of parallel diodes separated by resistors. The nonuniformities are approximated by small regions of reduced photovoltage, often referred to as “weak diodes”, and by isolated shunt resistors. The weak-diode approach allows investigation of device performance as a function of the weak-diode voltage deficit, the ratio of weak-to strong-diode area, and the weak diodes' spatial distribution. Increased TCO resistance can isolate weak diodes, thus limiting the voltage loss due to nonuniformities, but increasing fill-factor losses.


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