EPJ Photovoltaics最新文献_第4页

Experimental evaluation of the impact of pigment-based colored interlayers on the temperature of BIPV modules 基于色素的彩色夹层对BIPV组件温度影响的实验评估

EPJ Photovoltaics Pub Date : 2023-01-01 DOI: 10.1051/epjpv/2023028

Markus Babin, Ingvar Haukur Jóhannsson, Michael Linde Jakobsen, Sune Thorsteinsson

{"title":"Experimental evaluation of the impact of pigment-based colored interlayers on the temperature of BIPV modules","authors":"Markus Babin, Ingvar Haukur Jóhannsson, Michael Linde Jakobsen, Sune Thorsteinsson","doi":"10.1051/epjpv/2023028","DOIUrl":"https://doi.org/10.1051/epjpv/2023028","url":null,"abstract":"While colored photovoltaics are gaining popularity in the market for building-integrated photovoltaics (BIPV), several specific properties are not accounted for in standard PV performance models. This work shows how relying on the coloration efficiency alone can lead to significant errors regarding module temperatures. By comparing measured temperature data from a test installation featuring BIPV façade elements in multiple colors, little correlation is found between total optical losses (reflection and absorption losses) and module temperature. Instead, better correlation is found with total reflectance. This is attributed to the light absorbed in the pigment-based colored layers contributing to module heating, whereas reflected light does not. This is especially relevant for colors with high lightness, such as gray or beige, for which reflection losses are dominating absorption losses. When modelling colored BIPV products, it is therefore recommended to only consider reflection losses for the irradiance contributing to module heating, while continuing to also include absorption losses for the effective irradiance used in electrical performance modelling.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135659832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blind PV temperature model calibration PV温度模型盲校正

EPJ Photovoltaics Pub Date : 2023-01-01 DOI: 10.1051/epjpv/2023021

Anastasios Kladas, Bert Herteleer, Jan Cappelle

引用次数: 0

Assessing the long-term stability of laser enhanced contact optimization (LECO) treated PERC cells in PV modules by extended indoor and outdoor durability tests 通过扩展的室内和室外耐久性测试，评估激光增强接触优化(LECO)处理光伏组件中PERC电池的长期稳定性

IF 2.5

EPJ Photovoltaics Pub Date : 2023-01-01 DOI: 10.1051/epjpv/2023004

Eve Krassowski, B. Jaeckel, M. Pander, D. Dassler, S. Malik

{"title":"Assessing the long-term stability of laser enhanced contact optimization (LECO) treated PERC cells in PV modules by extended indoor and outdoor durability tests","authors":"Eve Krassowski, B. Jaeckel, M. Pander, D. Dassler, S. Malik","doi":"10.1051/epjpv/2023004","DOIUrl":"https://doi.org/10.1051/epjpv/2023004","url":null,"abstract":"It was previously shown that the Laser Enhanced Contact Optimization (LECO) Process is a promising boost for PERC and TOPCon cell manufacturing enhancement. In this contribution, a method is developed to assess the long-term stability of industrial LECO treated PERC cells in a module compound. Therefore, extended accelerated aging tests as well as outdoor measurements were performed on modules comprising LECO treated cells as well as untreated references. It is described, how data can be evaluated to separate typical, known aging and degradation effects from presumable LECO specific effects. The results of this work show that test modules comprising LECO treated cells did not show a different behavior in the accelerated aging or degradation compared to the reference. The same conclusion was found for thermal cycling and damp heat tests, both far in excess of IEC requirements, as well as in a sequential test sequence. In addition, their outdoor performance with local and integral measurements has been evaluated. We can conclude that for the tested PERC cells, aging and degradation effects appeared, but none of them could be attributed to the LECO process. Hence, improvements in the efficiency and/or yield on cell level due to LECO can be translated to the module or even system level considering typical aging and degradation behavior, independently of a prior LECO process.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57828630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of the degradation of amorphous silicon mini-modules under a severe sequential UV/DH test 非晶硅微型组件在严格的连续UV/DH测试下的降解分析

IF 2.5

EPJ Photovoltaics Pub Date : 2023-01-01 DOI: 10.1051/epjpv/2023014

Julia Vincent, Venkata Ramana Posa, Ali Khouzam, P. Logerais, Mustapha El Yaakoubi, A. Labouret

{"title":"Analysis of the degradation of amorphous silicon mini-modules under a severe sequential UV/DH test","authors":"Julia Vincent, Venkata Ramana Posa, Ali Khouzam, P. Logerais, Mustapha El Yaakoubi, A. Labouret","doi":"10.1051/epjpv/2023014","DOIUrl":"https://doi.org/10.1051/epjpv/2023014","url":null,"abstract":"This study presents the results of severe accelerated tests carried out on four encapsulated amorphous silicon (a-Si) mini-modules. All the a-Si mini-modules were exposed to a 85 °C and 85% relative humidity damp heat (DH) prolonged treatment for 5000 h representing five times the duration specified by the IEC 61215 standard for qualification tests. For two of the four mini-modules, the DH test was preceded by a severe UV preconditioning, by applying 30 times the dose of 15 kWh/m2 at a temperature of 50 °C as prescribed by the IEC 61215 standard, in order to enhance the degradation during the following DH test and to reduce the overall testing time. I–V curves were plotted with a time step of 100 h under standard test conditions (STC) using a class A solar simulator and a source meter in order to monitor the degradation throughout both the tests. A visual inspection with photographic capturing was also performed at each stage to detect the apparent defects. Corrosion observed after 2000 h owing to the ingress of humidity is explained here by two possible infiltration paths in the layers of the mini-modules. Delamination occurred after 5000 h for the PV mini-modules which underwent the extended DH test. After 5000 h of damp heat testing, the degradation of the maximal power (Pmax) was found to be slightly accelerated for the a-Si mini-modules that were previously exposed to a severe UV preconditioning, with a value reaching 80% of its initial value, whereas, for the others only subjected to the prolonged DH test, the maximal power remained above 80% of its initial value. In all cases, the mini-modules seemed highly reliable with no failure after 5000 h of accelerated testing, and, based on an equivalent time of 20 years for 1000 h of accelerated test, they would exhibit a limited degradation rate of 0.2%/year in outdoor field conditions.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57828874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-lightweight and flexible inverted metamorphic four junction solar cells for space applications 用于空间应用的超轻柔性倒变质四结太阳能电池

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022024

Malte Klitzke, J. Schön, R. H. van Leest, G. Bissels, E. Vlieg, M. Schachtner, F. Dimroth, D. Lackner

{"title":"Ultra-lightweight and flexible inverted metamorphic four junction solar cells for space applications","authors":"Malte Klitzke, J. Schön, R. H. van Leest, G. Bissels, E. Vlieg, M. Schachtner, F. Dimroth, D. Lackner","doi":"10.1051/epjpv/2022024","DOIUrl":"https://doi.org/10.1051/epjpv/2022024","url":null,"abstract":"In this work an inverted metamorphic four junction (IMM4J) solar cell with 30.9% conversion efficiency in beginning of life conditions under the AM0 (1367 W/m2) spectrum is presented. Additionally, our newest improved IMM3J cell, consisting of Ga0.51In0.49P/GaAs/Ga0.73In0.27As subcells, with 30.6% efficiency is also shown. The IMM4J solar cells consist of Al0.05Ga0.46In0.49P/Al0.14Ga0.86As/Ga0.89In0.11As/Ga0.73In0.27As subcells and are epitaxially grown by metal organic vapor phase epitaxy (MOVPE) on a GaAs substrate. These IMM solar cells achieve power-to-mass ratios of 3 W/g or more, which is more than three times higher than standard germanium based triple or four junction space solar cells. The losses in comparison to the simulated near-term potential efficiency of 33.8% for the IMM4J are analyzed in detail. Furthermore, the irradiation behavior for 1 MeV electron fluences of 1 × 1014 e−/cm2 and 2.5 × 1014 e−/cm2 for the IMM4J cells was investigated. A roadmap to further develop this concept towards an IMM5J with a realistic begin of life (BOL) efficiency potential of 35.9% under AM0 is presented.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57828029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Surface photovoltage characterisation of metal halide perovskite on crystalline silicon using Kelvin probe force microscopy and metal-insulator-semiconductor configuration 利用开尔文探针力显微镜和金属绝缘体-半导体结构表征晶体硅上金属卤化物钙钛矿的表面光电压

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022016

Aleksandra Bojar, D. Regaldo, J. Alvarez, D. Alamarguy, V. Donchev, S. Georgiev, P. Schulz, J. Kleider

{"title":"Surface photovoltage characterisation of metal halide perovskite on crystalline silicon using Kelvin probe force microscopy and metal-insulator-semiconductor configuration","authors":"Aleksandra Bojar, D. Regaldo, J. Alvarez, D. Alamarguy, V. Donchev, S. Georgiev, P. Schulz, J. Kleider","doi":"10.1051/epjpv/2022016","DOIUrl":"https://doi.org/10.1051/epjpv/2022016","url":null,"abstract":"In this study we analysed halide perovskite films deposited directly on crystalline silicon by means of two set-ups using different operating modes of the surface photovoltage (SPV) methods, i.e., the Kelvin probe force microscopy (KPFM) and the metal-insulator-semiconductor (MIS) technique. The KPFM allowed to visualize surface potential distribution on a microscale while MIS technique allowed to study SPV spectral dependence. We studied wavelength dependent SPV of these samples, which allowed us to effectively vary the probe depth in the sample and discern the contribution from each interface to the overall effect measured under white light illumination. Depending on where the photocarriers are generated, different SPV signals are observed: at the perovskite/Si interface, the signal depends on Si doping type, while at the surface the SPV is always negative indicating downward surface band bending. This is confirmed by analysing SPV phase measured in the AC MIS mode. In addition, distinction between slow and fast processes contributing to measured SPV was possible. It has been observed, that with decreasing the illumination wavelength, the processes causing SPV become slower, which can indicate that high energy photons not only generate electronic photocarriers but can also induce chemical changes with creation of defects or ionic species that also modify the measured SPV.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57828315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

EU PVSEC 2021: state of the art and developments for photovoltaics at the forefront EU PVSEC 2021:最前沿的光伏技术和发展

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022011

R. Kenny, J. Serra

引用次数: 0

Revealing of InP multi-layer stacks from KPFM measurements in the dark and under illumination 在黑暗和光照条件下KPFM测量揭示InP多层叠加

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022017

Mattia da Lisca, J. P. Connolly, J. Alvarez, K. Mekhazni, N. Vaissière, J. Decobert, J. Kleider

引用次数: 1

Analysis of the operation of PV strings at the MPP closest to the nominal MPP voltage instead of the global MPP based on measured current–voltage curves 根据测量的电流-电压曲线，分析PV串在最接近标称MPP电压的MPP处的运行情况，而不是在全局MPP处

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022001

K. Lappalainen, S. Valkealahti

{"title":"Analysis of the operation of PV strings at the MPP closest to the nominal MPP voltage instead of the global MPP based on measured current–voltage curves","authors":"K. Lappalainen, S. Valkealahti","doi":"10.1051/epjpv/2022001","DOIUrl":"https://doi.org/10.1051/epjpv/2022001","url":null,"abstract":"Under non-uniform operating conditions, photovoltaic (PV) generators may have several maximum power points (MPP) and voltage of the global MPP (GMPP) may vary quickly over a wide voltage range which may cause problems for tracking of the GMPP. Since highly varying GMPP voltage causes fluctuation of the inverter reference voltage, it would be beneficial to operate the PV system in a more predictable and straightforward manner by keeping the operating point of the inverter all the time close to the nominal MPP voltage. This article presents an experimental study of a scenario in which the MPP closest to the nominal MPP voltage (CMPP) is always the operating point instead of the GMPP. The analysis was based on 1,296,000 measured current–voltage curves of three different PV strings located at Tampere, Finland. 12 days of full-time measurements were analysed for each of the studied strings consisting of 6, 17 and 23 series-connected NAPS NP190GK PV modules. Furthermore, the effects of inverter sizing on the operating point behaviour of the strings were studied. The results show that the wide operating voltage range of the GMPP can be significantly reduced by operating at the CMPP at a cost of negligible energy losses. Energy losses due to power curtailment were much larger than energy losses due to operation at the CMPP instead of the GMPP.","PeriodicalId":42768,"journal":{"name":"EPJ Photovoltaics","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57827493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Electroluminescence analysis of silicon interdigitated back contact solar cells with a front surface selective band offset barrier 具有前表面选择性带偏移势垒的硅互指背接触太阳能电池的电致发光分析

IF 2.5

EPJ Photovoltaics Pub Date : 2022-01-01 DOI: 10.1051/epjpv/2022015

Koffi F. Ahanogbe, J. Alvarez, A. Jaffré, J. P. Connolly, M. Gueunier‐Farret, E. Fourmond, Seif El-Whibi, A. Fave, P. Carroy, Z. Djebbour, J. Kleider

引用次数: 0