Effect of laser surface treatment on solar cell efficiency

2021 ◽  
Author(s):  
Fatema H Rajab ◽  
Ahmad W AlShaer ◽  
Tayf T A Sahib
Keyword(s):  
Solar Cell ◽  
Surface Treatment ◽  
Laser Surface ◽  
Laser Surface Treatment ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Improvement of Cu2 ZnSn(S,Se)4 solar cell efficiency by surface treatment

2015 ◽  
Vol 12 (6) ◽  
pp. 704-707 ◽  
Author(s):  
Kento Furuta ◽  
Noriyuki Sakai ◽  
Takuya Kato ◽  
Hiroki Sugimoto ◽  
Yasuyoshi Kurokawa ◽  
...  
Keyword(s):  
Solar Cell ◽  
Surface Treatment ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

scholarly journals Incorporation of CdCl2 surface treatment into the CdS/ZnTe hetero-junction solar cell device structures for efficiency improvement

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Olajide I Olusola
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Surface Treatment ◽  
Tin Oxide ◽  
Window Layer ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Device Structures ◽  
Cdcl2 Treatment

p-ZnTe thin film semiconductors have been successfully used as an absorber material to n-CdS window layer by effectively optimising the ZnTe absorber layer thickness. In order to create a two terminal hetero-junction diode from the n- and p- type materials, two ohmic electrical contacts are required. This was achieved by depositing n-CdS layers on glass/fluorine-doped tin oxide (FTO) conducting substrate and evaporating Au on p-ZnTe layer. The ZnTe layer was successfully electroplated on CdS thin film grown on glass/fluorine-doped tin oxide (FTO) conducting substrates. The device structures were subjected to heat treatment in air with and without CdCl2 surface treatment using temperature of 400oC and duration of 10 minutes. The incorporation of the CdCl2 treatment led to enhancement in the solar cell efficiency. Solar cells developed from glass/FTO/n-CdS/p-ZnTe/Au device structure gave an open circuit voltage (Voc) of 450 mV, short circuit current density (Jsc) of 7.26 mAcm-2 and fill-factor (FF) of 0.31 resulting in 1.0% efficiency (η) for n-CdS/p-ZnTe heterostructure annealed ordinarily in air. After treating the top surface of n-CdS/p-ZnTe heterostructure with CdCl2 solution, all the solar cell parameters improved with Voc of 480 mV, Jsc of 24.0 mAcm-2 and FF of 0.46 giving a total efficiency of 5.3%. For the CdS/ZnTe heterostructures treated without and with CdCl2 solution, the rectification factors (RF) observed from the I-V characteristics under dark condition for these devices are 101.0 and 102.2 respectively. Both devices show ideality factors (n) in excess of 2.0 and the reverse saturation currents are 79.4 and 0.16 nA for hetero-junction structures without and with CdCl2 treatment respectively. The improvement in the solar cell efficiency can be accredited to the integration of the CdCl2 treatment in the p-n junction cells. Keywords: Solar Cells, p-n Junction Diodes, n-CdS, Heterostructure, p-ZnTe, CdCl2 surface treatment.

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.

Laser surface treatment of granite stones

2001 ◽  
Author(s):  
J. Pou ◽  
R. Soto ◽  
C. Trillo ◽  
A. F. Doval ◽  
M. Boutinguiza ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Laser Surface ◽  
Laser Surface Treatment

Solar cell efficiency tables (Version 58)

2021 ◽  
Author(s):  
Martin A. Green ◽  
Ewan D. Dunlop ◽  
Jochen Hohl‐Ebinger ◽  
Masahiro Yoshita ◽  
Nikos Kopidakis ◽  
...  
Keyword(s):  
Solar Cell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

scholarly journals CdTe-Based Thin Film Solar Cells: Past, Present and Future

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1684
Author(s):  
Alessandro Romeo ◽  
Elisa Artegiani
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Early Years ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

CdTe is a very robust and chemically stable material and for this reason its related solar cell thin film photovoltaic technology is now the only thin film technology in the first 10 top producers in the world. CdTe has an optimum band gap for the Schockley-Queisser limit and could deliver very high efficiencies as single junction device of more than 32%, with an open circuit voltage of 1 V and a short circuit current density exceeding 30 mA/cm2. CdTe solar cells were introduced at the beginning of the 70s and they have been studied and implemented particularly in the last 30 years. The strong improvement in efficiency in the last 5 years was obtained by a new redesign of the CdTe solar cell device reaching a single solar cell efficiency of 22.1% and a module efficiency of 19%. In this paper we describe the fabrication process following the history of the solar cell as it was developed in the early years up to the latest development and changes. Moreover the paper also presents future possible alternative absorbers and discusses the only apparently controversial environmental impacts of this fantastic technology.

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