Fully Evaporated High Efficiency Single Junction and Tandem Perovskite based Solar Cells.

2018 ◽  
Author(s):  
Henk Bolink ◽  
Lidon Gil-Escrig ◽  
Pablo P. Boix ◽  
Cristina Momblona ◽  
Jorge Avila ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Single Junction

scholarly journals High-Efficiency GaAs-Based Solar Cells

2020 ◽  
Author(s):  
Masafumi Yamaguchi
Keyword(s):  
Solar Cells ◽  
Radiative Recombination ◽  
High Efficiency ◽  
Single Junction ◽  
Analytical Results ◽  
Key Issues ◽  
Limiting Efficiency ◽  
Compound Materials

The III-V compound solar cells represented by GaAs solar cells have contributed as space and concentrator solar cells and are important as sub-cells for multi-junction solar cells. This chapter reviews progress in III-V compound single-junction solar cells such as GaAs, InP, AlGaAs and InGaP cells. Especially, GaAs solar cells have shown 29.1% under 1-sun, highest ever reported for single-junction solar cells. In addition, analytical results for non-radiative recombination and resistance losses in III-V compound solar cells are shown by considering fundamentals for major losses in III-V compound materials and solar cells. Because the limiting efficiency of single-junction solar cells is 30-32%, multi-junction junction solar cells have been developed and InGaP/GaAs based 3-junction solar cells are widely used in space. Recently, highest efficiencies of 39.1% under 1-sun and 47.2% under concentration have been demonstrated with 6-junction solar cells. This chapter also reviews progress in III-V compound multi-junction solar cells and key issues for realizing high-efficiency multi-junction cells.

scholarly journals High-efficiency microcrystalline silicon single-junction solar cells

2013 ◽  
Vol 21 (5) ◽  
pp. 821-826 ◽  
Author(s):  
Simon Hänni ◽  
Grégory Bugnon ◽  
Gaetano Parascandolo ◽  
Mathieu Boccard ◽  
Jordi Escarré ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Microcrystalline Silicon ◽  
Single Junction

Passivating contacts for high-efficiency silicon-based solar cells: from single-junction to tandem architecture

Nano Energy ◽  
2021 ◽  
pp. 106712
Author(s):  
Jiakai Zhou ◽  
Qian Huang ◽  
Yi Ding ◽  
Guofu Hou ◽  
Ying Zhao
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Single Junction ◽  
Silicon Based

High efficiency amorphous and nanocrystalline silicon based multi-junction solar cells deposited at high rates on textured Ag/ZnO back reflectors

2009 ◽  
Vol 1153 ◽  
Author(s):  
Guozhen Yue ◽  
Laura Sivec ◽  
Baojie Yan ◽  
Jeff Yang ◽  
Subhendu Guha
Keyword(s):  
Solar Cells ◽  
Triple Junction ◽  
High Efficiency ◽  
Nanocrystalline Silicon ◽  
Open Circuit ◽  
Very High Frequency ◽  
Solar Cell Performance ◽  
Single Junction ◽  
Back Reflectors ◽  
Back Reflector

AbstractWe report our recent progress on nc-Si:H single-junction and a-Si:H/nc-Si:H/nc-Si:H triple-junction cells made by a modified very-high-frequency (MVHF) technique at deposition rates of 10-15 Å/s. First, we studied the effect of substrate texture on the nc-Si:H single-junction solar cell performance. We found that nc-Si:H single-junction cells made on bare stainless steel (SS) have a good fill factor (FF) of ˜0.73, while it decreased to ˜0.65 when the cells were deposited on textured Ag/ZnO back reflectors. The open-circuit voltage (Voc) also decreased. We used dark current-voltage (J-V), Raman, and X-ray diffraction (XRD) measurements to characterize the material properties. The dark J-V measurement showed that the reverse saturated current was increased by a factor of ˜30 when a textured Ag/ZnO back reflector was used. Raman results revealed that the nc-Si:H intrinsic layers in the two solar cells have similar crystallinity. However, they showed a different crystallographic orientation as indicated in XRD patterns. The material grown on Ag/ZnO has more random orientation than that on SS. These experimental results suggested that the deterioration of FF in nc-Si:H solar cells on textured Ag/ZnO was caused by poor nc-Si:H quality. Based on this study, we have improved our Ag/ZnO back reflector and the quality of nc-Si:H component cells and achieved an initial and stable active-area efficiencies of 13.4% and 12.1%, respectively, in an a-Si:H/nc-Si:H/nc-Si:H triple-junction cell.

High Efficiency Monolithic Multi-Junction Solar Cells Using Lattice-Mismatched Growth

1998 ◽  
Vol 551 ◽  
Author(s):  
R.W. Hoffman ◽  
N.S. Fatemi ◽  
M.A. Stan ◽  
P. Jenkins ◽  
V.G. Weizer ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Device Performance ◽  
Lattice Match ◽  
New Approach ◽  
Single Junction ◽  
Junction Device ◽  
Ultimate Efficiency ◽  
Conversion Efficiencies

AbstractThe demand for spacecraft power has dramatically increased recently. Higher efficiency, multi-junction devices are being developed to satisfy the demand. The multi-junction cells presently being developed and flown do not employ optimized bandgap combinations for ultimate efficiency due to the traditional constraint of maintaining lattice match to available substrates. We are developing a new approach to optimize the bandgap combination and improve the device performance that is based on relaxing the condition of maintaining lattice match to the substrate. We have designed cells based on this approach, fabricated single junction components cells and tested their performance. We will report on our progress toward achieving beginning-of-life AMO multi-junction device conversion efficiencies above 30%.

Single-junction polymer solar cells with high efficiency and photovoltage

2015 ◽  
Vol 9 (3) ◽  
pp. 174-179 ◽  
Author(s):  
Zhicai He ◽  
Biao Xiao ◽  
Feng Liu ◽  
Hongbin Wu ◽  
Yali Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Single Junction

scholarly journals Spray Pyrolyzed TiO2 Embedded Multi-Layer Front Contact Design for High-Efficiency Perovskite Solar Cells

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Md. Shahiduzzaman ◽  
Mohammad Ismail Hossain ◽  
Sem Visal ◽  
Tetsuya Kaneko ◽  
Wayesh Qarony ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Cost Effective ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Single Junction

AbstractThe photovoltaic performance of perovskite solar cells (PSCs) can be improved by utilizing efficient front contact. However, it has always been a significant challenge for fabricating high-quality, scalable, controllable, and cost-effective front contact. This study proposes a realistic multi-layer front contact design to realize efficient single-junction PSCs and perovskite/perovskite tandem solar cells (TSCs). As a critical part of the front contact, we prepared a highly compact titanium oxide (TiO2) film by industrially viable Spray Pyrolysis Deposition (SPD), which acts as a potential electron transport layer (ETL) for the fabrication of PSCs. Optimization and reproducibility of the TiO2 ETL were discreetly investigated while fabricating a set of planar PSCs. As the front contact has a significant influence on the optoelectronic properties of PSCs, hence, we investigated the optics and electrical effects of PSCs by three-dimensional (3D) finite-difference time-domain (FDTD) and finite element method (FEM) rigorous simulations. The investigation allows us to compare experimental results with the outcome from simulations. Furthermore, an optimized single-junction PSC is designed to enhance the energy conversion efficiency (ECE) by > 30% compared to the planar reference PSC. Finally, the study has been progressed to the realization of all-perovskite TSC that can reach the ECE, exceeding 30%. Detailed guidance for the completion of high-performance PSCs is provided.

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