Improving Cu2ZnSnS4(CZTS) solar cell performance by an ultrathin ZnO intermediate layer between CZTS absorber and Mo back contact

2014 ◽  
Vol 8 (12) ◽  
pp. 966-970 ◽  
Author(s):  
Xiaolei Liu ◽  
Hongtao Cui ◽  
Wei Li ◽  
Ning Song ◽  
Fangyang Liu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Intermediate Layer ◽  
Cell Performance ◽  
Back Contact ◽  
Solar Cell Performance

Impact of Nonuniformities on Thin Cu(In,Ga)Se2 Solar Cell Performance

2007 ◽  
Vol 1012 ◽  
Author(s):  
Ana Kanevce ◽  
James R. Sites
Keyword(s):  
Solar Cell ◽  
Fill Factor ◽  
Cell Performance ◽  
Device Performance ◽  
Back Contact ◽  
Two Dimensional ◽  
Solar Cell Performance ◽  
Voltage Loss ◽  
Dimensional Network ◽  
Diode Voltage

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.

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

2021 ◽  
Author(s):  
Fang-I Lai ◽  
Jui-Fu Yang ◽  
Yu-Chao Hsu ◽  
Shou-Yi Kuo
Keyword(s):  
Thin Films ◽  
Solar Cell ◽  
Double Layer ◽  
Structural Control ◽  
Layer Structure ◽  
Cell Performance ◽  
Back Contact ◽  
Solar Cell Performance ◽  
Double Layer Structure

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...

Improvement of Ag(In,Ga)Se2/Mo Interface and Solar Cell Performance by Preselenization of the Mo Back Contact

2020 ◽  
Vol 10 (6) ◽  
pp. 1900-1907
Author(s):  
Xianfeng Zhang ◽  
Daming Zhuang ◽  
Leng Zhang ◽  
Maoxi Zheng ◽  
Yuehui Wang
Keyword(s):  
Solar Cell ◽  
Cell Performance ◽  
Back Contact ◽  
Solar Cell Performance

Numerical study of CdTe solar cells with p-MoTe2 TMDC as an interfacial layer using SCAPS

2018 ◽  
Vol 32 (23) ◽  
pp. 1850269 ◽  
Author(s):  
Mohamed Moustafa ◽  
Tariq Alzoubi
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Band Gap ◽  
Carrier Concentration ◽  
Interfacial Layer ◽  
Cell Performance ◽  
Maximum Efficiency ◽  
Back Contact ◽  
Solar Cell Performance ◽  
The Impact

The impact of molybdenum ditelluride (p-type MoTe2) transition metal dichalcogenide (TMDC) material formation as an interfacial layer between CdTe absorber layer and Mo back contact is investigated. The simulation is conducted using the solar cell capacitance simulator (SCAPS) software. Band gap energy, carrier concentration, and layer thickness of the p-MoTe2 have been varied in this study to investigate the possible influences of p-MoTe2 on the electrical properties and the photovoltaic parameters of CdTe thin film solar cells. It has been observed that a thickness of the p-MoTe2 interfacial layer less than 60 nm leads to a decrease in the cell performance. In regard to the effect of the band gap, a maximum efficiency of 16.4% at the optimum energy gap value of 0.95 eV has been obtained at a doping of [Formula: see text]. Additionally, increasing the acceptor carrier concentration [Formula: see text] of MoTe2 enhances the solar cell performance. The solar cell efficiency reaches 15.5% with [Formula: see text] of [Formula: see text] with layer thicknesses above 80 nm. This might be attributed to the possibility of forming a back surface field for the photogenerated electrons, which reduces recombination at the back contact and hence provides a low resistivity contact for holes. The results justify that the MoTe2 interfacial layer mediates an ohmic contact to CdTe films.

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.

scholarly journals Improvement of organic solar cell performance by multiple plasmonic excitations using mixed-silver nanoprisms

2021 ◽  
Author(s):  
Apichat Phengdaam ◽  
Supeera Nootchanat ◽  
Ryousuke Ishikawa ◽  
Chutiparn Lertvachirapaiboon ◽  
Kazunari Shinbo ◽  
...  
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Silver Nanoprisms
Sign in / Sign up

Export Citation Format

Share Document