Towards CdZnTe solar cells: An evolution to post-treatment annealing atmosphere

被引:39
作者
Chander, S. [1 ,2 ]
De, A. K. [1 ]
Dhaka, M. S. [2 ]
机构
[1] Indian Inst Sci Educ & Res Mohali, Dept Chem Sci, Sect 81, Sas Nagar 140306, Mohali, India
[2] Mohanlal Sukhadia Univ, Dept Phys, Udaipur 313001, India
关键词
CdZnTe solar cells; Efficiency enhancement; Vapor proceed techniques; Atmosphere evolution; Microstructural and optical properties; THIN-FILMS; PHYSICAL-PROPERTIES; COST;
D O I
10.1016/j.solener.2018.09.025
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The increasing energy demand and resulting decay in the conventional energy resources indicate to find viable and affordable alternative resources. The cell efficiency and properties of absorber/window layers concerned can be tailored by the different post-treatments and therefore an evolution of post-treatment atmosphere conditions is undertaken in this work to enhance the performance of vapor proceed CdZnTe solar cells. Firstly, the microstructural and optical properties of absorber CdZnTe layer were optimized where films have zinc blende cubic structure with maximum crystallinity for Ar + O-2 atmosphere while the energy band gap is influenced by the annealing in different atmospheres. Secondly, CdZnTe solar cells were fabricated using vapor proceed technique with device structure ITO/CdS/CdZnTe/Au and performance analysis is done by varying the atmosphere of post-annealing treatment. The device treated at 400 degrees C in the Ar + O-2 atmosphere has maximum cell efficiency of 8.49% and more trap-states crossed the Fermi level as confirmed by Mott-Schottky plots. The dopant density and built-in potential are also evaluated. The findings of this work reveal that the efficiency of CdZnTe solar cells can be enhanced by the post-annealing treatment in different atmospheres.
引用
收藏
页码:757 / 761
页数:5
相关论文
共 29 条
[1]   Obtaining Large Columnar CdTe Grains and Long Lifetime on Nanocrystalline CdSe, MgZnO, or CdS Layers [J].
Amarasinghe, Mahisha ;
Colegrove, Eric ;
Moseley, John ;
Moutinho, Helio ;
Albin, David ;
Duenow, Joel ;
Jensen, Soren ;
Kephart, Jason ;
Sampath, Walajabad ;
Sivananthan, Siva ;
Al-Jassim, Mowafak ;
Metzger, Wyatt K. .
ADVANCED ENERGY MATERIALS, 2018, 8 (11)
[2]   Characteristics of radio frequency sputtered CdxZnyTez thin film alloy and CdS/CdxZnyTez junction [J].
Banerjee, Pushan ;
Ghosh, Biswajit .
THIN SOLID FILMS, 2013, 531 :203-207
[3]   CdTe solar cells with open-circuit voltage breaking the 1V barrier [J].
Burst, J. M. ;
Duenow, J. N. ;
Albin, D. S. ;
Colegrove, E. ;
Reese, M. O. ;
Aguiar, J. A. ;
Jiang, C. -S. ;
Patel, M. K. ;
Al-Jassim, M. M. ;
Kuciauskas, D. ;
Swain, S. ;
Ablekim, T. ;
Lynn, K. G. ;
Metzger, W. K. .
NATURE ENERGY, 2016, 1
[4]   Single-crystal II-VI on Si single-junction and tandem solar cells [J].
Carmody, M. ;
Mallick, S. ;
Margetis, J. ;
Kodama, R. ;
Biegala, T. ;
Xu, D. ;
Bechmann, P. ;
Garland, J. W. ;
Sivananthan, S. .
APPLIED PHYSICS LETTERS, 2010, 96 (15)
[5]   Time evolution to CdCl2 treatment on Cd-based solar cell devices fabricated by vapor evaporation [J].
Chander, Subhash ;
Dhaka, M. S. .
SOLAR ENERGY, 2017, 150 :577-583
[6]   Thermal annealing induced physical properties of electron beam vacuum evaporated CdZnTe thin films [J].
Chander, Subhash ;
Dhaka, M. S. .
THIN SOLID FILMS, 2017, 625 :131-137
[7]   Enhancement of optical and structural properties of vacuum evaporated CdTe thin films [J].
Chander, Subhash ;
Purohit, A. ;
Lal, C. ;
Dhaka, M. S. .
MATERIALS CHEMISTRY AND PHYSICS, 2017, 185 :202-209
[8]   Thermal evolution of physical properties of vacuum evaporated polycrystalline CdTe thin films for solar cells [J].
Chander, Subhash ;
Dhaka, M. S. .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2016, 27 (11) :11961-11973
[9]   Optimization of structural, optical and electrical properties of CdZnTe thin films with the application of thermal treatment [J].
Chander, Subhash ;
Dhaka, M. S. .
MATERIALS LETTERS, 2016, 182 :98-101
[10]   Fabrication of CdS/CdTe-Based Thin Film Solar Cells Using an Electrochemical Technique [J].
Dharmadasa, I. M. ;
Bingham, P. A. ;
Echendu, O. K. ;
Salim, H. I. ;
Druffel, T. ;
Dharmadasa, R. ;
Sumanasekera, G. U. ;
Dharmasena, R. R. ;
Dergacheva, M. B. ;
Mit, K. A. ;
Urazov, K. A. ;
Bowen, L. ;
Walls, M. ;
Abbas, A. .
COATINGS, 2014, 4 (03) :380-415