Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC)最新文献_第10页

Voltage performance of quantum well solar cells in the Al/sub x/Ga/sub 1-x/As/GaAs and the GaAs/In/sub y/Ga/sub 1-y/As material systems Al/sub x/Ga/sub 1-x/As/GaAs和GaAs/ in /sub y/Ga/sub 1-y/As材料体系中量子阱太阳能电池的电压性能

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520648

G. Haarpaintner, J. Barnes, K. Barnham, J. P. Connolly, S. S. Dosarajh, J. Nelson, C. Roberts, C. Button, G. Hili, M. Pate, J. Roberts

引用次数: 5

Optimal surface and bulk passivation of high efficiency multicrystalline silicon solar cells 高效多晶硅太阳电池的最佳表面和本体钝化

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520190

H.E. Elgamel, A. Rohatgi, Z. Chen, C. Vinckier, J. Nijs, R. Mertens

{"title":"Optimal surface and bulk passivation of high efficiency multicrystalline silicon solar cells","authors":"H.E. Elgamel, A. Rohatgi, Z. Chen, C. Vinckier, J. Nijs, R. Mertens","doi":"10.1109/WCPEC.1994.520190","DOIUrl":"https://doi.org/10.1109/WCPEC.1994.520190","url":null,"abstract":"Conventional (CC) and electromagnetically cast (EMC) multicrystalline silicon solar cells are fabricated following different passivation schemes. Thin layers (/spl sim/100 /spl Aring/) of thermal dry and PECVD SiO/sub 2/ are implemented for providing oxide surface passivation for multicrystalline silicon solar cells. It is found that growing thin layers of thermal dry oxide results in efficient surface passivation. However, for thin PECVD SiO/sub 2/ layers it is necessary to perform, post deposition, low temperature (/spl sim/350/spl deg/C) forming gas anneal in order to observe the surface passivation effect. In addition, hydrogen plasma passivation has been optimized for achieving very deep penetration of atomic hydrogen in the material (>30 /spl mu/m) and as a consequence very effective bulk passivation of multicrystalline silicon solar cells. By combining the thermal dry surface oxide passivation with the hydrogen plasma treatment from the front and the back sides, efficiency of 17% on 4 cm/sup 2/ (independently confirmed by NREL as 16.93%) is realized without any Al gettering. On the other hand, the solar cell efficiencies obtained using thin layers of PECVD SiO/sub 2/ are found to be very comparable to the efficiency of the cells fabricated with thermal dry SiO/sub 2/ layers.","PeriodicalId":20517,"journal":{"name":"Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86369055","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: 4

New upper efficiency limits for semiconductor solar cells 半导体太阳能电池的新效率上限

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520555

J. H. Werner, R. Brendel, H. J. Oueisser

引用次数: 28

Characterization of amorphous silicon pin solar cells by transient measurement techniques 用瞬态测量技术表征非晶硅引脚太阳能电池

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520012

G. Schmid, M. Schubert, H. Brummack, N. Bernhard

{"title":"Characterization of amorphous silicon pin solar cells by transient measurement techniques","authors":"G. Schmid, M. Schubert, H. Brummack, N. Bernhard","doi":"10.1109/WCPEC.1994.520012","DOIUrl":"https://doi.org/10.1109/WCPEC.1994.520012","url":null,"abstract":"In order to provide more specific access to solar cell limitations (and to faults during line production as well) the authors report on space-charge limited time-of-flight (SCL-TOF) studies in the voltage mode, and on forward bias transient switching experiments in 500 nm thick pin structures. Complementing I-V characteristics and quantum yield, both techniques are easy to use and give a clear and reproducible measure of the degradation state of a-Si:H based solar cells. An effective carrier lifetime can be deduced from the extraction time of SCL-TOF. Time and temperature dependent forward current transients show a distinct voltage threshold in the onset of double-injection recombination currents which is related to the built-in voltage of the devices. Enhanced bulk recombination due to light or current induced degradation reduces saturated forward currents and increases the time initially needed for building up space charge in the pin-diodes. Differences upon light-soaking by front or back side illumination have also been investigated.","PeriodicalId":20517,"journal":{"name":"Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86445988","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

Present status and future prospects of electromagnetic casting for silicon solar cells 硅太阳能电池电磁铸造技术的现状与展望

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.519805

K. Kaneko, R. Kawamura, T. Misawa

{"title":"Present status and future prospects of electromagnetic casting for silicon solar cells","authors":"K. Kaneko, R. Kawamura, T. Misawa","doi":"10.1109/WCPEC.1994.519805","DOIUrl":"https://doi.org/10.1109/WCPEC.1994.519805","url":null,"abstract":"The development research of electromagnetic casting (EMC) for silicon crystal manufacturing technology has been carried out for years with the purpose of providing low cost multicrystalline silicon substrate for solar cells. The EMC technology is a new concept, in which electromagnetic force is utilized to suspend molten metal without contact to crucible wall for melting and solidification of silicon material. The first fundamental research for casting was begun in 1987 with a small round cross-sectioned ingot of 5 cm diameter, and the ingot size was gradually expanded with a square cross-sectioned ingot shape. The research has been carried out for the development of casting technique with an ingot size of 22/spl times/22 cm/sup 2/ cross section, and the furnace construction for producing a 35/spl times/35 cm/sup 2/ cross sectioned ingot has begun. Solar cell conversion efficiencies using EMC ingot crystals are in the range of 13-14%, and the quality of EMC material reaches within that of conventional mold casting material. By the improvements of higher casting speed, higher material quality and larger ingot size of EMC technology, it is expected that a new casting technique for lower cost ingot production will be realized.","PeriodicalId":20517,"journal":{"name":"Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89097464","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: 5

Actual optical and thermal performance of PV-modules 光伏模块的实际光学和热学性能

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520063

S. Krauter, R. Hanitsch

引用次数: 99

A study on the microscopical and macroscopical effects of hydrogenation on the performance of multicrystalline solar cells 氢化对多晶太阳能电池微观和宏观性能影响的研究

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520527

M. Rosmeulen, H.E. Elgamel, J. Poortmans, M.-A. Trauwaert, J. Vanhellemont, J. Nijs

{"title":"A study on the microscopical and macroscopical effects of hydrogenation on the performance of multicrystalline solar cells","authors":"M. Rosmeulen, H.E. Elgamel, J. Poortmans, M.-A. Trauwaert, J. Vanhellemont, J. Nijs","doi":"10.1109/WCPEC.1994.520527","DOIUrl":"https://doi.org/10.1109/WCPEC.1994.520527","url":null,"abstract":"The grains in the multicrystalline materials used nowadays are typically in the order of a mm or more. In the present study the improvement of different materials (Eurosolare material and EMC material from Sumitomo Sitix) is studied. The method of hydrogenation used consists of a hydrogenation in an RF-plasma. The treatment is from the front or back side of the substrate. The beneficial effect of hydrogenation is illustrated by I-V-measurements under AM1.5 illumination, dark I-V measurements and extraction of minority carrier lifetime by the microwave-detected photoconductive decay method. The measurement on the full solar cell reveals only macroscopic and hence lumped consequences of the hydrogenation. Additional insight was gained from measurements on small mesa-type diodes. In this way we can discriminate between diodes with a grain boundary running through the active device and devices fully contained within one grain. This allows one to split the effects of the hydrogenation on the grain boundaries and the intra-grain defects. Dark I-V-measurements and deep-level transient spectroscopy (DLTS) were used to characterize the diodes in the Eurosolare material. The DLTS-spectra revealed a broad band for the diodes with a grain boundary running through them. This peak completely disappeared on samples which received a direct H-plasma treatment from the front side.","PeriodicalId":20517,"journal":{"name":"Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78995542","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

Deployment of a dispatchable photovoltaic system: technical and economic results 可调度光伏系统的部署:技术和经济效果

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520179

J. Byrne, Young-Doo Wang, S. Letendre, C. Govindarajalu, R. Nigro, W. Bottenberg

引用次数: 1

Interference effects on room-temperature photoluminescence spectra of GaAs/Ge space solar cells 干扰对GaAs/Ge空间太阳能电池室温光致发光光谱的影响

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.521660

G. Timò, C. Flores

引用次数: 0

High-efficiency solar cells using HEM silicon 使用HEM硅的高效太阳能电池

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) Pub Date : 1994-12-05 DOI: 10.1109/WCPEC.1994.520197

C. Khattak, F. Schmid, W. K. Schubert

引用次数: 4