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Design and optimization of a monolithic GaInP/GaInAs tandem solar cell

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Journal of Semiconductors 2010年第8期31卷 84-87页

作者：张汉陈诺夫汪宇尹志岗张兴旺施辉伟王彦硕黄添懋 Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of Sciences School of Renewable Energy Engineering North China Electric Power University National Laboratory of Microgravity Institute of MechanicsChinese Academy of Sciences

We have theoretically calculated the photovoltaic conversion efficiency of a monolithic dual-junction GaInP/GaInAs device,which can be experimentally fabricated on a binary GaAs *** optimizing the bandgap combination of the considered structure,an improvement of conversion efficiency has been observed in comparison to the conventional GaInP_2/GaAs *** the suggested bandgap combination 1.83 eV/1.335 eV,our calculation indicates that the attainable efficiency can be enhanced up to 40.45%（300 suns,AM1.5d） for the optimal structure parameter（1550 nm GaInP top and 5500 nm GaInAs bottom）,showing promising application prospects due to its acceptable lattice-mismatch（0.43%） to the GaAs substrate.

关键词： Ⅲ-Ⅴsemiconductor photovoltaic tandem solar cell theoretical efficiency

Optical design of perovskite/c-silicon tandem solar cell with Ag grating back reflectors

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Optical design of perovskite/c-silicon tandem solar cell wit...

Improving intrinsic stability for perovskite/silicon tandem solar cells

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Yawei Kuang Shuchang Wang Qingzhu Wei Yulong Ma Shuchang Wang Yushen Liu School of Physics and Electronic Engineering Changshu Institute of Technology

tandem cells are solar cells made of multiple junctions with tunable absorbing materials, which aim to overcome the Shockley–Queisser limit of single junction solar cells. Recently, organic–inorganic hybrid perovskite solar cells have stirred enormous interest as ideal candidates for tandem cells, due to high open circuit voltage, relatively wide optical bandgap, and low temperature solution processibility. Light trapping is one of the key issues to improve the light absorption and increase the efficiency of tandem solar cells. The absorption of perovskite/c-Si tandem solar cells with metal Ag grating are systematically researched by utilizing finite difference time domain(FDTD) method. The results show that metal grating back reflector can mainly enhance the absorption of infrared light for solar cells. When the metal grating with the structural parameters of period is 500 nm, height is 100 nm, and duty cycle is 0.5, the average absorption rate of the solar cells in wavelength range of 800～1100 nm can be improved by 55.4% via replacing only Al back film. Due to the excellent reflection characteristics of metal grating, the transmitted light is reflected back to absorbing layer, so that it can be absorbed two or more times. So the absorption efficiency of tandem solar cells can be improved greatly.

关键词： perovskite tandem solar cell Ag grating

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Science China(Physics,Mechanics & Astronomy) 2023年第1期66卷 85-105页

作者： Tailai Xu Yihua Chen Qi Chen School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

Monolithic hybrid halide perovskite/crystalline silicon(c-Si)tandem solar cells have demonstrated their great potential to surpass the theoretical efficiency limit of single-junction ***,the stability of perovskite sub-cells is inferior to that of the c-Si solar cells that have been commercialized,casting serious doubt about the lifetime of the entire *** device operation,light and heat are inevitable,which requires special ***,we review the current understandings of the intrinsic stability of perovskite/c-Si tandems upon light and/or heat ***,we summarize the recent understandings regarding light facilitated ion migration,materials decomposition,and phase *** addition,the reverse bias effect on the stability of tandem modules caused by uneven illumination is ***,this review also summarizes the thermalinduced degradation and mismatch issue,which underlines the system design of perovskite/c-Si ***,recent strategies to improve the intrinsic stability of perovskite/c-Si tandems under light and/or heat are reviewed,such as composition engineering,crystallinity enhancement,interface modification,material optimization,and device structure *** last,we present several potential research directions that have been overlooked,and hope those are helpful for future research on perovskite based tandem solar cells.

关键词： perovskite c-Si tandem solar cell light stability thermal stability photovoltaic module

Comparative architecture in monolithic perovskite/silicon tandem solar cells

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Science China(Physics,Mechanics & Astronomy) 2023年第1期66卷 60-84页

作者： Sayantan Mazumdar Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterSolar Energy Conversion CenterNankaiUniversityTianjin 300350China Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

Inorganic-organic metal halide perovskite light harvester-based perovskite solar cells(PSCs)with widely tunable bandgap have achieved rapid growth in power conversion efficiency,which exceeds 25%*** is deliberated that if a semitransparent solar cell made of wider bandgap materials was placed on top of a narrow bandgap materials-based solar cell such as a silicon solar cell,with proper optical and electrical arrangements,the resultant tandem device consisting of two subcells could more effectively utilize the solar spectrum than a single junction solar *** a perovskite/silicon tandem solar cell(PSTSC),a semitransparent PSC with a wider bandgap is placed on top of a narrow bandgap silicon solar *** PSC efficiently harvests the higher energy photons in the ultraviolet and visible regions of the solar spectrum while the silicon solar cell can convert the photons of the infrared region to *** PSTSC is proposed as a potential candidate to overcome the Shockley-Queisser limit of single-junction silicon solar *** the theoretical limit of a PSTSC is calculated as~42%,its actual efficiency achieved until now is less than 30%.Therefore,a great scope of research exists in improving the efficiency of *** issues of stability and upscaling of the device in PSCs are also a matter of concern for PSTSCs.A tandem device consists of multiple parts,and different configurations can be applied,thus tuning the architecture of the *** various parts may result in significant changes in the efficiency of the *** this review,competing architectures of otherwise comparable devices are compared in terms of photovoltaic ***,future directions to improve the efficiency of the device based on architecture design are proposed *** particular,the influence of the polarity of PSCs and the surface morphology of silicon solar cells(both front and rear)on determining the properties of the PSTSC are discussed.

关键词： tandem solar cell silicon solar cell perovskite perovskite solar cell solar cell architecture polarity of tandem solar cell photoelectrochemical cells photoconduction and photovoltaic effects solar cells and arrays

Ligand engineering of colloid quantum dots and their application in all-inorganic tandem solar cells

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Journal of Energy Chemistry 2020年第11期29卷 230-239页

作者： Fen Qiao Yi Xie Zhankun Weng Huaqiang Chu School of Energy&Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070HubeiChina Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing Changchun University of Science and TechnologyChangchun 130022JilinChina International Research Centre for Nano Handling and Manufacturing of China Changchun University of Science and TechnologyChangchun 130022JilinChina School of Energy and Environment Anhui University of Technology.Ma'an-shan 243002.AnhuiChina

How to effectively utilize the energy of the broad spectrum of sunlight is one of the basic problems in the research of tandem solar cells. Due to their size effect, quantum confinement effect and coupling effect, colloidal quantum dots(QDs) exhibit new physical properties that bulk materials don’t ***(X = Se, S, etc.) and Pb X(X = Se, S, etc.) QDs prepared by hot-injection methods have been widely studied in the areas of photovolitaic devices. However, the surfactants surrounding QDs seriously hinder the charge transport of QDs based solar cells. Therefore, how to fabricate high-performance tandem solar cells via ligands engineering has become a major challenge. In this paper, the latest progress of colloidal QDs in the research of all-inorganic tandem solar cells was summarized. Firstly, the improvement of QDs surface ligands and the optimization of ligands engineering were discussed, and the control of the physical properties of QDs films were realized. From the aspects of colloidal QDs, ligand engineering, and solar cell preparation, the future development direction of colloidal QDs solar cells was proposed, providing technical guidances for the preparation of low-cost and high-efficiency nanocrystalline solar cells.

关键词： Hot-injection method Colloidal quantum dots Ligand engineering tandem solar cell

Theoretical modeling of the interface recombination effect on the performance of Ⅲ-Ⅴtandem solar cells

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Journal of Semiconductors 2010年第8期31卷 16-21页

作者：林桂江吴志强黄美纯 Department of Physics Xiamen University Xiamen San'an Optoelectronics Co Ltd

A typical GaInP/GaInAs/Ge tandem solar cell structure operating under AM0 illumination is proposed, and the current-voltage curves are calculated for different recombination velocities at both front and back-surfaces of the three subcells by using a theoretical model including optical and electrical *** is found that the surface recombination at the top GaInP cell is the main limitation for obtaining high efficiency tandem solar cells.

关键词： interface recombination GaInP/GaInAs/Ge tandem solar cell AMO illumination

MoO_3/Ag/Al/ZnO intermediate layer for inverted tandem polymer solar cells

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Chinese Physics B 2014年第3期23卷 669-672页

作者：卿健钟镇锋刘勇李宝军周翔 State Key Lab of Optoelectronic Materials and Technologies School of Physics and Engineering Sun Yat-Sen University

We report an MoO3/Ag/Al/ZnO intermediate layer connecting two identical bulk heterojunction subcells with a poly（3-hexylthiophene） and [6,6]-phenyl-C61-butyric acid methyl ester （P3HT and PCBM） active layer for inverted tan- dem polymer solar cells. The highly transparent intermediate layer with an optimized thickness realizes an Ohmic contact between the two subcells for effective charge extraction and recombination. A maximum power conversion efficiency of 3.76% is obtained for the tandem cell under 100 mW/cm2 illumination, which is larger than that of a single cell （3.15%）. The open-circuit voltage of the tandem cell （1.18 V） approaches double that of the single cell （0.61 V）.

关键词： polymer solar cell inverted structure tandem solar cell intermediate layer

Numerical Simulation of tandem Using ZnS as a Buffer Layer Cu I_(1-x)Ca_xSe₂/CuGaSe₂

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Modeling and Numerical Simulation of Material Science 2023年第1期13卷 1-10页

作者： Donafologo Soro Sékou Toure Adama Sylla Amal Bouich Júlia Mari-Guaita Siaka Toure Bernabé Mari Soucase Département des Sciences et Technologie Ecole Normale Supérieure (ENS) Abidjan C&#244te d’Ivoire Laboratoire d’Energie Solaire Université FHB D’Abidjan-Cocody Abidjan C&#244te d’Ivoire Departament de Física Aplicada-IDF Universitat Politècnica de València Valencia Spain

In the global context of diversification of usable energy sources, the use of renewable energies, in particular solar photovoltaic energy, is becoming increasingly important. As such, the development of a new generation of photovoltaic cells based on the CIGS material is promising. Indeed, the efficiency of these cells has exceeded 20% in recent years. Thus, our work consists in the modeling of a tandem solar cell based on Cu(In,Ga)Se2 (CGS/CIGS). The goal is to optimize its physical and geometrical parameters in order to obtain a better photovoltaic conversion efficiency compared to other research works on tandem in the past. We used AMPS-1D software for the simulation. When we realize the tandem, the least efficient cell (CGS) imposes the current and the shape of the J-V characteristic of the tandem. We obtained a theoretical efficiency of 39.30% which is significantly higher than the efficiencies obtained in the past by other researchers with a short circuit current of 34.60 mA/cm2, an open circuit voltage of 1.74 V and a form factor of 65.20%. The simulation also showed that the high defect density in the material strongly impacts the performance of the tandem.

关键词： Photovoltaic Energy Simulation AMPS-1D tandem solar cell Efficiency

In2O3:H for enabling highly NIR-transparent perovskite solar cells and 24.6% 4-T perovskite/CIS tandems

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In2O3:H for enabling highly NIR-transparent perovskite solar...