scholarly journals Effect of Various Wafer Surface Etching Processes on c-Si Solar Cell Characteristics

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4106
Author(s):  
Jeong Eun Park ◽  
Chang-Soon Han ◽  
Won Seok Choi ◽  
Donggun Lim
Keyword(s):  
Solar Cell ◽  
Quantum Efficiency ◽  
Alkaline Solution ◽  
Wavelength Region ◽  
Surface Characteristics ◽  
Wafer Surface ◽  
Short Wavelength Region ◽  
Emitter Layer ◽  
Pyramid Structure ◽  
One Step

In order to analyze the effects of various sizes of pyramid structure on solar cell characteristics, a pyramid structure was formed on the wafer through various etching processes. In this paper, etching was performed using one-step etching processes such as alkaline solution etching, reactive ion etching (RIE), and metal-assisted chemical etching (MACE), and two-step etching processes such as alkaline solution + MACE and alkaline solution + RIE. The micro-sized pyramid-structured wafers formed using the alkali solution showed higher reflectivity than nano-sized pyramid-structured wafers. Accordingly, it was expected that the characteristics of the cells fabricated with a nano-sized pyramid-structured wafer having low reflectivity would be higher than that of a micro-sized pyramid-structured wafer. However, it was confirmed that the quantum efficiency characteristics in the short wavelength region were higher in the micro-sized pyramid-structured wafers than in the nano-sized pyramid-structured wafers. To confirm the reason for this, surface characteristics were analyzed through the deposition of an emitter layer on a wafer formed in a pyramidal structure. As a result, in the case of the nano-sized pyramid-structured wafer, the sheet resistance characteristics were lower due to the increased depth of the emitter layer in comparison to the micro-sized pyramid-structured wafer. Accordingly, it was determined that the quantum efficiency was degraded as a result of the high recombination rate.

QUANTUM EFFICIENCY MEASUREMENT IN A HIT SOLAR CELL

2019 ◽  
Vol 68 ◽  
pp. 120-125
Author(s):  
A. V. Ermachikhin ◽  
◽  
Yu. V. Vorobyov ◽  
V. O. Sazonov ◽  
◽  
...  
Keyword(s):  
Solar Cell ◽  
Quantum Efficiency ◽  
Efficiency Measurement

Simulation and modeling of the influence of temperature on CdS/CdTe thin film solar cell

2019 ◽  
Vol 87 (3) ◽  
pp. 30101 ◽  
Author(s):  
Abdel-baset H. Mekky
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Influence Of Temperature ◽  
Cdte Solar Cell ◽  
Cell Parameters ◽  
Current Voltage ◽  
Capacitance Voltage ◽  
Influence Of Temperature On

Semiconductor materials cadmium sulfide (CdS) and cadmium telluride (CdTe) are employed in the fabrication of thin film solar cells of relatively excessive power conversion efficiency and low producing price. Simulations of thin film CdS/CdTe solar cell were carried out using SCAPS-1D. The influence of temperature field on the variation of CdTe solar cell parameters such as current–voltage, capacitance–voltage characteristics and the external quantum efficiency was investigated theoretically. For use temperatures, one obtains the external quantum efficiency has the same profiles. However, the effect of the temperature on the Mott-Schottky curves is slightly noted by variations on the characteristics. This conclusion can be used by solar cell manufacturers to improve the solar cell parameters with the biggest possible gain in device performance.

Effect of appropriate ETL on quantum efficiency of double perovskite La2NiMnO6 based solar cell device via SCAPS simulation

2021 ◽  
Author(s):  
Abhishek Raj ◽  
Avneesh Anshul ◽  
Vinita Tuli ◽  
Pramod K. Singh ◽  
Ram Chandra Singh ◽  
...  
Keyword(s):  
Solar Cell ◽  
Quantum Efficiency ◽  
Double Perovskite ◽  
Solar Cell Device

scholarly journals Superior Antireflection Coating for a Silicon Cell with a Micronanohybrid Structure

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Hsi-Chien Liu ◽  
Gou-Jen Wang
Keyword(s):  
Solar Cell ◽  
Silicon Solar Cell ◽  
Low Cost ◽  
Antireflection Coating ◽  
Light Spectrum ◽  
Two Stage ◽  
Liquid Diffusion ◽  
Pyramid Structure ◽  
Short Time ◽  
Structure Array

The object of this paper is to develop a high antireflection silicon solar cell. A novel two-stage metal-assisted etching (MAE) method is proposed for the fabrication of an antireflective layer of a micronanohybrid structure array. The processing time for the etching on an N-type high-resistance (NH) silicon wafer can be controlled to around 5 min. The resulting micronanohybrid structure array can achieve an average reflectivity of 1.21% for a light spectrum of 200–1000 nm. A P-N junction on the fabricated micronanohybrid structure array is formed using a low-cost liquid diffusion source. A high antireflection silicon solar cell with an average efficiency of 13.1% can be achieved. Compared with a conventional pyramid structure solar cell, the shorted circuit current of the proposed solar cell is increased by 73%. The major advantage of the two-stage MAE process is that a high antireflective silicon substrate can be fabricated cost-effectively in a relatively short time. The proposed method is feasible for the mass production of low-cost solar cells.

Characteristics of Perovskite Solar Cells with Methylammonium Iodide-Added Anti-Solvent

2021 ◽  
Vol 21 (8) ◽  
pp. 4367-4371
Author(s):  
Sung Hwan Joo ◽  
Il Tae Kim ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Step Method ◽  
Electron Hole ◽  
Perovskite Layer ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
One Step ◽  
Hole Recombination

The perovskite film—manufactured via a one-step method—was superficially improved through an anti-solvent process to increase solar cell efficiency. Although perovskite synthesis proceeds rapidly, a significant amount of lead iodide residue remains. Well-placed lead iodide in perovskite grains prevents electron–hole recombination; however, when irregularly placed, it interferes with the movement of electron and holes. In this study, we focused on improving the crystallinity of the perovskite layer, as well as reducing lead iodide residues by adding a methylammonium halide material to the anti-solvent. Methylammonium iodide in chlorobenzene used as an anti-solvent reduces lead iodide residues and improves the crystallinity of formamidinium lead iodide perovskite. The improved crystallinity of the perovskite layer increased the absorbance and, with reduced lead iodide residues, increased the efficiency of the perovskite solar cell by 1.914%.

One-step preparation of TiO2 anti-reflection coating and cover layer by liquid phase deposition for monocrystalline Si PERC solar cell

2022 ◽  
Vol 234 ◽  
pp. 111433
Author(s):  
Jui-Yu Wang ◽  
Chien-Sheng Huang ◽  
Sin-Liang Ou ◽  
Yun-Shao Cho ◽  
Jung-Jie Huang
Keyword(s):  
Solar Cell ◽  
Liquid Phase ◽  
Liquid Phase Deposition ◽  
Cover Layer ◽  
One Step

One-step direct fabrication of phase-pure Cu2O films via the spin-spray technique using a mixed alkaline solution

2020 ◽  
Vol 243 ◽  
pp. 122442
Author(s):  
Ryosuke Nitta ◽  
Yuta Kubota ◽  
Tetsuo Kishi ◽  
Tetsuji Yano ◽  
Nobuhiro Matsushita
Keyword(s):  
Alkaline Solution ◽  
Direct Fabrication ◽  
Phase Pure ◽  
Spray Technique ◽  
One Step ◽  
Cu2o Films

scholarly journals Development of Activated Carbon Using One Step Carbonization and Activation Reaction by Polymer Blend Method

2015 ◽  
Vol 57 ◽  
pp. 156-162 ◽  
Author(s):  
S. Manocha ◽  
Parth Joshi ◽  
Amit Brahmbhatt ◽  
Amiya Banerjee ◽  
Snehasis Sahoo ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Surface Characteristics ◽  
Nitrogen Atmosphere ◽  
Activation Process ◽  
Average Pore ◽  
Activation Temperature ◽  
Optimum Synthesis ◽  
Different Temperatures ◽  
One Step

In the present work, a one step carbon activation process was developed by stabilized poly-blend. It is carbonized in nitrogen atmosphere and activated in steam in one step for known interval of times to enhance the surface area and develop interconnected porosity. The weight-loss behavior during steam activation of stabilized poly-blend at different temperatures, surface area and pore size distribution were studied to identify the optimum synthesis parameters. The results of surface characteristics were compared with those of activated carbon prepared by carbonization and activation in two steps. It was found that activation temperature has profound effect on surface characteristics. As activation temperature was raised from 800 °C to 1150 °C, surface area of activated carbon increased about three times. In addition to surface area, average pore diameter also increases with increasing activation temperature. Thus, activated carbon with high percentage of porosity and surface area can be developed by controlling the activation temperature during activation process.

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