scholarly journals Dependence of the Photocurrent of a Schottky-Barrier Solar Cell on the Back Surface Recombination Velocity and Suggestion for a Structure with Improved Performance

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Avigyan Chatterjee ◽  
Ashim Kumar Biswas ◽  
Amitabha Sinha
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Schottky Barrier ◽  
Spectral Response ◽  
Surface Recombination ◽  
Surface Recombination Velocity ◽  
Back Surface ◽  
Carrier Distribution ◽  
Improved Performance ◽  
Recombination Velocity

Though Schottky-barrier solar cells have been studied extensively previously, not much work has been done recently on these cells, because of the fact that conventional p-n junction silicon solar cells have much higher efficiency and have attracted the attention of most of the researchers. However, the Schottky-barrier solar cells have the advantage of simple and economical fabrication process. In this paper, the effect of back surface recombination velocity on the minority carrier distribution and the spectral response of a Schottky-barrier silicon solar cell have been investigated and, based on this study, a new design of the cell with a back surface field has been suggested, which is expected to give much improved performance.

scholarly journals Numerical Simulation Analysis of Ag Crystallite Effects on Interface of Front Metal and Silicon in the PERC Solar Cell

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 592
Author(s):  
Myeong Sang Jeong ◽  
Yonghwan Lee ◽  
Ka-Hyun Kim ◽  
Sungjin Choi ◽  
Min Gu Kang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Open Circuit Voltage ◽  
Surface Recombination ◽  
Open Circuit ◽  
Surface Recombination Velocity ◽  
Metal Interface ◽  
Ag Crystallites ◽  
Recombination Velocity

In the fabrication of crystalline silicon solar cells, the contact properties between the front metal electrode and silicon are one of the most important parameters for achieving high-efficiency, as it is an integral element in the formation of solar cell electrodes. This entails an increase in the surface recombination velocity and a drop in the open-circuit voltage of the solar cell; hence, controlling the recombination velocity at the metal-silicon interface becomes a critical factor in the process. In this study, the distribution of Ag crystallites formed on the silicon-metal interface, the surface recombination velocity in the silicon-metal interface and the resulting changes in the performance of the Passivated Emitter and Rear Contact (PERC) solar cells were analyzed by controlling the firing temperature. The Ag crystallite distribution gradually increased corresponding to a firing temperature increase from 850 ∘C to 950 ∘C. The surface recombination velocity at the silicon-metal interface increased from 353 to 599 cm/s and the open-circuit voltage of the PERC solar cell decreased from 659.7 to 647 mV. Technology Computer-Aided Design (TCAD) simulation was used for detailed analysis on the effect of the surface recombination velocity at the silicon-metal interface on the PERC solar cell performance. Simulations showed that the increase in the distribution of Ag crystallites and surface recombination velocity at the silicon-metal interface played an important role in the decrease of open-circuit voltage of the PERC solar cell at temperatures of 850–900 ∘C, whereas the damage caused by the emitter over fire was determined as the main cause of the voltage drop at 950 ∘C. These results are expected to serve as a steppingstone for further research on improvement in the silicon-metal interface properties of silicon-based solar cells and investigation on high-efficiency solar cells.

The Effect of Al-BSF on Seff and Rb in Industrialized Mono-Silicon Solar Cells

2012 ◽  
Vol 472-475 ◽  
pp. 1846-1850
Author(s):  
Shan Shan Dai ◽  
Gao Jie Zhang ◽  
Xiang Dong Luo ◽  
Jing Xiao Wang ◽  
Wen Jun Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spectral Response ◽  
Short Circuit ◽  
Rear Surface ◽  
Surface Recombination ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Surface Recombination Velocity ◽  
Silicon Solar Cells ◽  
Back Surface

In this work, the effect of aluminum back surface field formed by screen printed various amount of Al paste on the effective rear surface recombination velocity (Seff) and the internal rear reflectance coeffeicient (Rb) of commercial mono-silicon solar cells was investigated. We demonstrated the effect of Seffand Rbon the performance of Al-BSF solar cells by simulating them with PC1D. The simulated results showed that the lower Seffcould get higher open circuit voltage (Voc), at the same time, the larger Rbcould get higher short-circuit current (Isc). Experimentally, we investigated the Seffand Rbthrough depositing Al paste with various amount (3.7, 5, 6, and 8 mg/cm2) for fabricating Al-BSF mono-silicon solar cells. Four group cells were characterized by light I-V, spectral response, hemispherical reflectance and scanning electron microscope (SEM) measurements. It was found that, a minimum Seffof 350 cm/s was gotten from the cells with Al paste of 8 mg/cm2, which was extracted by matching quantum efficiency (QE) from 800 nm to 1200 nm with PC1D, and a maximum Rbof 53.5% was obtained from Al paste of 5 mg/cm2by calculating at 1105 nm with PC1D. When the amount of Al paste was higher than 5mg/cm2, there were less Seffand lower Rb. On the other hand, when Al amount was 3.7mg/cm2, it was too little to form a closed BSF. Based on the SEM graphs and simulations with PC1D, a simple explaination was proposed for the experimental results.

Low effective back‐surface recombination velocity by boron implantation on 0.3‐Ω‐cmp‐type silicon solar cells

1988 ◽  
Vol 63 (9) ◽  
pp. 4683-4687 ◽  
Author(s):  
Leendert A. Verhoef ◽  
Albert Zondervan ◽  
Fredrik A. Lindholm ◽  
Mark B. Spitzer ◽  
Christopher J. Keavney
Keyword(s):  
Solar Cells ◽  
Surface Recombination ◽  
Surface Recombination Velocity ◽  
Silicon Solar Cells ◽  
Back Surface ◽  
Type Silicon ◽  
Boron Implantation ◽  
Recombination Velocity

scholarly journals Back Surface Recombination Velocity Modeling in White Biased Silicon Solar Cell under Steady State

2018 ◽  
Vol 09 (02) ◽  
pp. 189-201
Author(s):  
Ousmane Diasse ◽  
Amadou Diao ◽  
Mamadou Wade ◽  
Marcel Sitor Diouf ◽  
Ibrahima Diatta ◽  
...  
Keyword(s):  
Steady State ◽  
Solar Cell ◽  
Silicon Solar Cell ◽  
Surface Recombination ◽  
Surface Recombination Velocity ◽  
Back Surface ◽  
Velocity Modeling ◽  
Recombination Velocity

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.

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.

Sign in / Sign up

Export Citation Format

Share Document