Calculated effect of conduction-band offset on CuInSe2 solar-cell performance

1996 ◽  
Author(s):  
Xiaoxiang Liu ◽  
James R. Sites
Keyword(s):  
Solar Cell ◽  
Conduction Band ◽  
Cell Performance ◽  
Band Offset ◽  
Solar Cell Performance ◽  
Conduction Band Offset ◽  
Calculated Effect

Limiting effects of conduction band offset and defect states on high efficiency CZTSSe solar cell

Nano Energy ◽  
2018 ◽  
Vol 45 ◽  
pp. 75-83 ◽  
Author(s):  
SeongYeon Kim ◽  
Tanka R. Rana ◽  
JunHo Kim ◽  
Dae-Ho Son ◽  
Kee-Jeong Yang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conduction Band ◽  
High Efficiency ◽  
Band Offset ◽  
Defect States ◽  
Conduction Band Offset

Effect of deposited temperatures of the buffer layer on the band offset of CZTS/In 2 S 3 heterostructure and its solar cell performance

2017 ◽  
Vol 26 (4) ◽  
pp. 046802 ◽  
Author(s):  
Jinling Yu ◽  
Zhongming Zheng ◽  
Limei Dong ◽  
Shuying Cheng ◽  
Yunfeng Lai ◽  
...  
Keyword(s):  
Solar Cell ◽  
Buffer Layer ◽  
Cell Performance ◽  
Band Offset ◽  
Solar Cell Performance

Controlling the conduction band offset for highly efficient ZnO nanorods based perovskite solar cell

2015 ◽  
Vol 107 (7) ◽  
pp. 073507 ◽  
Author(s):  
Juan Dong ◽  
Jiangjian Shi ◽  
Dongmei Li ◽  
Yanhong Luo ◽  
Qingbo Meng
Keyword(s):  
Solar Cell ◽  
Conduction Band ◽  
Zno Nanorods ◽  
Perovskite Solar Cell ◽  
Band Offset ◽  
Conduction Band Offset ◽  
Highly Efficient

Tailoring the conduction band of titanium oxide by doping tungsten for efficient electron injection in a sensitized photoanode

Nanoscale ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 3875-3880 ◽  
Author(s):  
Alex M. Cant ◽  
Fuzhi Huang ◽  
Xiao Li Zhang ◽  
Yang Chen ◽  
Yi-Bing Cheng ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Cell ◽  
Titanium Oxide ◽  
Conduction Band ◽  
Electron Injection ◽  
Cell Performance ◽  
Dye Sensitized Solar Cell ◽  
Solar Cell Performance ◽  
Dye Sensitized

The combination of finely tuned chemical and optical properties of the photoanode material enabled a further enhancement of the dye-sensitized solar cell performance.

Conduction-Band-Offset Rule Governing J-V Distortion in CdS/CI(G)S Solar Cells

2005 ◽  
Vol 865 ◽  
Author(s):  
A. Kanevce ◽  
M. Gloeckler ◽  
A.O. Pudov ◽  
J.R. Sites
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conduction Band ◽  
Defect Density ◽  
Forward Bias ◽  
Window Layer ◽  
Band Offset ◽  
Type I ◽  
Current Collection ◽  
Conduction Band Offset

AbstractA type-I (“spike”) conduction-band offset (CBO) greater than a few tenths of an eV at the n/p interface of a solar cell can lead to significant distortion of the current-voltage (J-V) curve. Such distortion has been observed in CdS/CIS cells, low-gallium CdS/CIGS cells, and CIGS cells with alternative windows that increase the CBO. The basic feature is reduced current collection in forward bias. The distortion is mitigated by photoconductivity in the CdS or other window layer, and it is therefore more severe if the illumination contains no photons with energies greater than the band gap of the window layer. The device-physics analysis of such distortion is numerical simulation incorporating a three-layer [TCO/CdS/CI(G)S] approximation for the solar cell. The parameters that influence the barrier height, and hence the distortion, are the magnitude of the CBO, the doping of the p- and n- layers, the defect density of the CdS, and the thicknesses of the CdS and TCO layers. The key value, however, is the energy difference between the quasi-Fermi level for electrons and the conduction band at the CdS/CIS interface. Thermionic emission across the interface will limit the current collection, if the difference exceeds approximately 0.48 eV at 300 K and one-sun illumination. This constraint is consistent with experiment, and strategies to satisfy the 0.48-eV rule when designing solar cells are enumerated.

Cliff-like conduction band offset and KCN-induced recombination barrier enhancement at the CdS/Cu2ZnSnS4 thin-film solar cell heterojunction

2011 ◽  
Vol 99 (22) ◽  
pp. 222105 ◽  
Author(s):  
M. Bär ◽  
B.-A. Schubert ◽  
B. Marsen ◽  
R. G. Wilks ◽  
S. Pookpanratana ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Conduction Band ◽  
Thin Film Solar Cell ◽  
Band Offset ◽  
Conduction Band Offset ◽  
Cu2znsns4 Thin Film

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

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