Exploring Back Contact Technology to Increase CdS/CdTe Solar Cell Efficiency

2007 ◽  
Vol 1012 ◽  
Author(s):  
Alan L. Fahrenbruch
Keyword(s):  
Solar Cell ◽  
Barrier Height ◽  
Surface Recombination ◽  
Back Surface ◽  
Back Contact ◽  
Solar Cell Efficiency ◽  
Cdte Solar Cell ◽  
Cell Efficiency ◽  
Contact Barrier

AbstractThe primary routes for increasing CdS/CdTe solar cell efficiency involve increasing free carrier density, reducing bulk and interface recombination, and/or reducing back contact barrier height. This paper focuses on the role of the back contact barrier in increasing cell efficiency. Measurement of barrier height and back surface recombination are outlined and three CdTe/MX/M back contact prototypes, each with particular strengths, are discussed to bring out important issues.

Towards Ultra Thin and High Efficiency ZnxCd1-xS/CdTe Solar Cell by AMPS 1D

2012 ◽  
Vol 622-623 ◽  
pp. 1183-1187
Author(s):  
Md. Sharafat Hossain ◽  
Mahmud Abdul Matin ◽  
M.A. Islam ◽  
Mohammad Mannir Aliyu ◽  
Takhir Razykov ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Surface Recombination ◽  
Initial Step ◽  
Absorber Layer ◽  
Window Layer ◽  
Back Surface ◽  
Cdte Solar Cell ◽  
Starting Point ◽  
Contact Barrier

The main motivation of this work was to obtain high efficiency at reduced CdTe absorber layer thickness and replacing ZnxCd1-xS as window layer in conventional CdS/CdTe solar cells. The conventional CdTe baseline case was the starting point of this investigation to analyze ultra thin and high efficiency ZnxCd1-xS/CdTe solar cell for optimal value of x. The initial step of the analysis was to decrease the CdTe absorber layer to the extreme limit of 1 µm and at this thickness the proposed cell has shown satisfactory level of efficiencies. The ultimate step was to insert a suitable back surface field (BSF) with As2Te3 to reduce the back contact barrier height and back surface recombination loss of the ultra thin cell. All the analysis was done using the widely used simulator Analysis of Microelectronic and Photonic Structures (AMPS 1D). The conversion efficiency of 18.02% (Voc = 0.89 V, Jsc = 25.34 mA/cm2, FF = 0.78) without BSF and an efficiency of 20.3% (Voc = 0.93 V, Jsc = 25.97 mA/cm2, FF = 0.825) with As2Te3 BSF were achieved for the proposed cells from 1 µm and 0.6 µm CdTe absorber layer respectively. Moreover, the normalized efficiency of the proposed ultra thin cells linearly decreased with the increasing operating temperature at the gradient of -0.35%/°C, which indicates better stability of the ultra thin cells.

scholarly journals Optimization of Mono-Crystalline Silicon Solar Cell Devices Using PC1D Simulation

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4986
Author(s):  
Gokul Sidarth Thirunavukkarasu ◽  
Mehdi Seyedmahmoudian ◽  
Jaideep Chandran ◽  
Alex Stojcevski ◽  
Maruthamuthu Subramanian ◽  
...  
Keyword(s):  
Solar Cell ◽  
Doping Concentration ◽  
Surface Recombination ◽  
Surface Recombination Velocity ◽  
Back Surface ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Surface Field ◽  
Recombination Velocity ◽  
Pc1d Simulation

Expeditious urbanization and rapid industrialization have significantly influenced the rise of energy demand globally in the past two decades. Solar energy is considered a vital energy source that addresses this demand in a cost-effective and environmentally friendly manner. Improving solar cell efficiency is considered a prerequisite to reinforcing silicon solar cells’ growth in the energy market. In this study, the influence of various parameters like the thickness of the absorber or wafer, doping concentration, bulk resistivity, lifetime, and doping levels of the emitter and back surface field, along with the surface recombination velocity (front and back) on solar cell efficiency was investigated using PC1D simulation software. Inferences from the results indicated that the bulk resistivity of 1 Ω·cm; bulk lifetime of 2 ms; emitter (n+) doping concentration of 1×1020 cm−3 and shallow back surface field doping concentration of 1×1018 cm−3; surface recombination velocity maintained in the range of 102 and 103 cm/s obtained a solar cell efficiency of 19%. The Simulation study presented in this article allows faster, simpler, and easier impact analysis of the design considerations on the Si solar cell wafer fabrications with increased performance.

Diffused back surface field formation in combination with two-step H2annealing for improvement of silicon nanowire-based solar cell efficiency

2017 ◽  
Vol 56 (4S) ◽  
pp. 04CP01 ◽  
Author(s):  
Wipakorn Jevasuwan ◽  
Ken C. Pradel ◽  
Thiyagu Subramani ◽  
Junyi Chen ◽  
Toshiaki Takei ◽  
...  
Keyword(s):  
Solar Cell ◽  
Silicon Nanowire ◽  
Back Surface ◽  
Solar Cell Efficiency ◽  
Back Surface Field ◽  
Cell Efficiency ◽  
Surface Field ◽  
Field Formation

scholarly journals Status and Potential of CdTe Solar-Cell Efficiency

2015 ◽  
Vol 5 (4) ◽  
pp. 1217-1221 ◽  
Author(s):  
Russell M. Geisthardt ◽  
Marko Topic ◽  
James R. Sites
Keyword(s):  
Solar Cell ◽  
Solar Cell Efficiency ◽  
Cdte Solar Cell ◽  
Cell Efficiency

scholarly journals High performance as-cast P3HT:PCBM devices: understanding the role of molecular weight in high regioregularity P3HT

2021 ◽  
Author(s):  
Naresh Chandrasekaran ◽  
Anil Kumar ◽  
Lars Thomsen ◽  
Dinesh Kabra ◽  
Christopher R. McNeill
Keyword(s):  
Molecular Weight ◽  
Solar Cell ◽  
High Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Four batches of P3HT with varied molecular weight (MW) but constant regioregularity (RR) are investigated. When RR is fixed at 100%, solar cell efficiency is less sensitive to MW with high efficiencies achieved for as-cast devices.

Semiconductor Materials and Modelling for Solar Cells

2021 ◽  
Author(s):  
Z. Pezeshki ◽  
A. Zekry
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Surface Recombination ◽  
Semiconductor Materials ◽  
Surface Recombination Velocity ◽  
Solar Cell Efficiency ◽  
Uv Sensitivity ◽  
Cell Efficiency ◽  
Comprehensive Survey ◽  
Recombination Velocity

The book presents a comprehensive survey about advanced solar cell technologies. Focus is placed on semiconductor materials, solar cell efficiency, improvements in surface recombination velocity, charge density, high ultraviolet (UV) sensitivity, modeling of solar cells etc. The book references 281 original resources with their direct web links for in-depth reading.

Boosting CZTSSe Solar Cell Efficiency by Back Surface Field Layer

2018 ◽  
Vol 10 (5) ◽  
pp. 05035-1-05035-5
Author(s):  
Abd Elhalim Benzetta ◽  
◽  
Mahfoud Abderrezek ◽  
Mohammed Elamine Djeghlal ◽  
◽  
...  
Keyword(s):  
Solar Cell ◽  
Back Surface ◽  
Solar Cell Efficiency ◽  
Back Surface Field ◽  
Field Layer ◽  
Cell Efficiency ◽  
Surface Field
Sign in / Sign up

Export Citation Format

Share Document