scholarly journals Characterization of Nanocrystalline SiGe Thin Film Solar Cell with Double Graded-Dead Absorption Layer

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Chao-Chun Wang ◽  
Dong-Sing Wuu ◽  
Shui-Yang Lien ◽  
Yang-Shih Lin ◽  
Chueh-Yang Liu ◽  
...  

The nanocrystalline silicon-germanium (nc-SiGe) thin films were deposited by high-frequency (27.12 MHz) plasma-enhanced chemical vapor deposition (HF-PECVD). The films were used in a silicon-based thin film solar cell with graded-dead absorption layer. The characterization of the nc-SiGe films are analyzed by scanning electron microscopy, UV-visible spectroscopy, and Fourier transform infrared absorption spectroscopy. The band gap of SiGe alloy can be adjusted between 0.8 and 1.7 eV by varying the gas ratio. For thin film solar cell application, using double graded-dead i-SiGe layers mainly leads to an increase in short-circuit current and therefore cell conversion efficiency. An initial conversion efficiency of 5.06% and the stabilized efficiency of 4.63% for an nc-SiGe solar cell were achieved.

Author(s):  
Md. Fakhrul Islam ◽  
Nadhrah Md Yatim ◽  
Mohd Azman Hashim@Ismail

Copper Zinc Tin Sulfide (CZTS) solar cells have recently attracted attention as a potential low-cost earth abundant replacement for CIGS cells. This is due to their constituent’s Zn and Sn are non-toxic and earth-abundant compare to the elements of In and Ga in CIGS. Thus, aiming to analyse solar cells free from the environmental contaminant, CZTS is viewed as a potential candidate as the absorber for the next generation thin film solar cells. However, the conversion efficiency of CZTS based solar cells reported which is relatively low (highest conversion efficiency recorded is 12.5%) from the theoretical conversion efficiency limit of 32.2%. This is due to the low fill factor (FF), open circuit voltage (Voc) and current density (Jsc). In this study analysis of the different CZTS based solar cells and its synthesis methods will be reviewed. The effect of the compositional change and various structure in the CZTS, different buffer layers with their interfaces are thoroughly studied. The challenges regarding improving the conversion efficiency of CZTS solar cells and their future in the thin film solar cell application are discussed.


2016 ◽  
Vol 367 ◽  
pp. 480-484 ◽  
Author(s):  
Xiaoyan Yang ◽  
Bo Liu ◽  
Bing Li ◽  
Jingquan Zhang ◽  
Wei Li ◽  
...  

Author(s):  
Fianti Fianti ◽  
Badrul Munir ◽  
Kyoo Ho Kim ◽  
Mohammad Ikhlasul Amal

<div style="text-align: justify;">Thin film solar cell experience fast development, especially for thin film solar cell CdTe and Cu(In,Ga)Se2 (CIGS). However, the usage of rare element in the nature such as In, Te, and Ga and toxic such as Cd give limitation in the future development and production growth in big scale. Development of other alternative compound with maintain the profit of electronic and optic character which get from CIGS chalcopyrite compound will be explain. Compound of Cu2ZnSnSe4 (CZTSe) is downward compound from CIGS with substitute the In and Ga element with Zn and Sn. The compound kesterite structure can be modified with variation of chalcogen element to get wanted character in solar cell application. Efficiency record of photovoltaic devices conversion used this compound or downward reach 9.7%.©2016 JNSMR UIN Walisongo. All rights reserved.</div>


2015 ◽  
Vol 7 (12) ◽  
pp. 6472-6479 ◽  
Author(s):  
Wilman Septina ◽  
Masaaki Kurihara ◽  
Shigeru Ikeda ◽  
Yasuhiro Nakajima ◽  
Toshiyuki Hirano ◽  
...  

2008 ◽  
Vol 516 (17) ◽  
pp. 5836-5841 ◽  
Author(s):  
M. Berginski ◽  
J. Hüpkes ◽  
W. Reetz ◽  
B. Rech ◽  
M. Wuttig

2018 ◽  
Vol 453 ◽  
pp. 126-131 ◽  
Author(s):  
Jiyang Liu ◽  
Xiaolan Liu ◽  
Ke Yang ◽  
Siying He ◽  
Hongting Lu ◽  
...  

2015 ◽  
Vol 1738 ◽  
Author(s):  
Liyuan Zhang ◽  
Sreejith Karthikeyan ◽  
Mandip J. Sibakoti ◽  
Stephen A. Campbell

ABSTRACTWe investigate the synthesis of kesterite Cu2ZnSnS4 (CZTS) thin films using thermal evaporation from copper, zinc and tin pellets and post-annealing in a sulfur atmosphere. The effects of chemical composition were studied both on the absorber layer properties and on the final solar cell performance. It is confirmed that CZTS thin film chemical composition affects the carrier concentration profile, which then influences the solar cell properties. Solar cells using a CZTS thin film with composition ratio Cu/(Zn+Sn) = 0.87, and Zn/Sn = 1.24 exhibited an open-circuit voltage of 483 mV, a short-circuit current of 14.54 mA/cm2, a fill factor of 37.66 % and a conversion efficiency of 2.64 %. Only a small deviation from the optimal chemical composition can drop device performance to a lower level, which confirms that the CZTS solar cells with high conversion efficiency existed in a relatively narrow composition region.


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