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dc.contributor.author Jeong, A.R. ko
dc.contributor.author Jo, W. ko
dc.contributor.author Jo, H.J. ko
dc.contributor.author Kim, D.-H. ko
dc.contributor.author Sung, S.J. ko
dc.contributor.author Kang, J.K. ko
dc.contributor.author Lee, D.H. ko
dc.contributor.author Nam, D.H. ko
dc.contributor.author Park, D.Y. ko
dc.contributor.author Cheong, H. ko
dc.date.available 2017-07-11T08:07:41Z -
dc.date.created 2017-05-08 -
dc.date.issued 2011 -
dc.identifier.citation 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011, pp.184 - 185 -
dc.identifier.isbn 9780000000000 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/3923 -
dc.description.abstract Understanding of grain boundary (GB) is critical for photovoltaic applications since electron-hole recombination at GBs determines the conversion efficiency. However, our local electrical and optical analysis shows positive potential at GBs in Cu(In,Ga)Se 2 (CIGS), which suppresses the recombination at GBs. We report on a direct measurement of potential distribution and local electrical transport on the surface of photovoltaic CIGS using a nano-scale electrical characterization of Kelvin probe microscopy and conductive atomic force microscopy. This reveals that the positively charged surface potential at GB is expected to increase the minority carrier collection and the enhanced current at GB leads to large carrier mobility and electron-hole separation at the GBs. Micro-Raman scattering results helps to analyze electrical behavior from defect analysis. © 2011 IEEE. -
dc.publisher Institute of Electrical and Electronics Engineers Inc. -
dc.title Nano-scale observation of charge transport and potential distribution of photovoltaic Cu(In,Ga)Se 2 thin-films -
dc.type Conference -
dc.identifier.doi 10.1109/NMDC.2011.6155335 -
dc.identifier.scopusid 2-s2.0-84860452493 -
dc.type.rims CONF -
dc.contributor.nonIdAuthor Jeong, A.R. -
dc.contributor.nonIdAuthor Jo, W. -
dc.contributor.nonIdAuthor Nam, D.H. -
dc.contributor.nonIdAuthor Park, D.Y. -
dc.contributor.nonIdAuthor Cheong, H. -
dc.identifier.citationStartPage 184 -
dc.identifier.citationEndPage 185 -
dc.identifier.citationTitle 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 -
dc.type.journalArticle Conference Paper -
dc.identifier.conferencecountry US -
dc.identifier.conferencelocation Jeju -
dc.contributor.affiliatedAuthor Jo, H.J. -
dc.contributor.affiliatedAuthor Kim, D.-H. -
dc.contributor.affiliatedAuthor Sung, S.J. -
dc.contributor.affiliatedAuthor Kang, J.K. -
dc.contributor.affiliatedAuthor Lee, D.H. -
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