{"title":"非真空沉积碱金属对太阳能电池铜铟镓硒化吸收层影响的研究","authors":"O. Nwakanma, A. Morales-Acevedo, V. Subramaniam","doi":"10.1109/PVSC45281.2020.9300478","DOIUrl":null,"url":null,"abstract":"In this study, we carried out surface post-deposition treatment (PDT) on the CIGSe layer with heavier alkali metals using a non-vacuum method. X-ray diffraction studies confirmed that no secondary phases forms after the PDT. Morphological studies using scanning electron microscopy showed the presence of some enlarged grains after PDT with a substantial increase in mobility from Hall effect measurements. Further topographical characterization using atomic force microscopy (AFM) shows a reduction in peak-to-peak surface morphology due to the PDT. The comparison of the bandgap values after PDT showed a slight variation due to variation in the In/Ga ratios. The Raman spectroscopy of all the samples exhibited only the A1 characteristic mode of the chalcopyrite structures with a shoulder attributed to the presence of ordered vacancy layers (OVC) formed by the alkali metal secondary phases.","PeriodicalId":6773,"journal":{"name":"2020 47th IEEE Photovoltaic Specialists Conference (PVSC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Study Of The Effects Of Non-Vacuum Deposited Alkali-Metals On Copper-Indium-Gallium-Selenide Absorber Layers For Solar Cells\",\"authors\":\"O. Nwakanma, A. Morales-Acevedo, V. Subramaniam\",\"doi\":\"10.1109/PVSC45281.2020.9300478\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this study, we carried out surface post-deposition treatment (PDT) on the CIGSe layer with heavier alkali metals using a non-vacuum method. X-ray diffraction studies confirmed that no secondary phases forms after the PDT. Morphological studies using scanning electron microscopy showed the presence of some enlarged grains after PDT with a substantial increase in mobility from Hall effect measurements. Further topographical characterization using atomic force microscopy (AFM) shows a reduction in peak-to-peak surface morphology due to the PDT. The comparison of the bandgap values after PDT showed a slight variation due to variation in the In/Ga ratios. The Raman spectroscopy of all the samples exhibited only the A1 characteristic mode of the chalcopyrite structures with a shoulder attributed to the presence of ordered vacancy layers (OVC) formed by the alkali metal secondary phases.\",\"PeriodicalId\":6773,\"journal\":{\"name\":\"2020 47th IEEE Photovoltaic Specialists Conference (PVSC)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 47th IEEE Photovoltaic Specialists Conference (PVSC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PVSC45281.2020.9300478\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 47th IEEE Photovoltaic Specialists Conference (PVSC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PVSC45281.2020.9300478","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Study Of The Effects Of Non-Vacuum Deposited Alkali-Metals On Copper-Indium-Gallium-Selenide Absorber Layers For Solar Cells
In this study, we carried out surface post-deposition treatment (PDT) on the CIGSe layer with heavier alkali metals using a non-vacuum method. X-ray diffraction studies confirmed that no secondary phases forms after the PDT. Morphological studies using scanning electron microscopy showed the presence of some enlarged grains after PDT with a substantial increase in mobility from Hall effect measurements. Further topographical characterization using atomic force microscopy (AFM) shows a reduction in peak-to-peak surface morphology due to the PDT. The comparison of the bandgap values after PDT showed a slight variation due to variation in the In/Ga ratios. The Raman spectroscopy of all the samples exhibited only the A1 characteristic mode of the chalcopyrite structures with a shoulder attributed to the presence of ordered vacancy layers (OVC) formed by the alkali metal secondary phases.
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