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dc.contributor.authorMia, Md Dalim ( )
dc.contributor.authorSwartz, Craig H. ( )
dc.contributor.authorPaul, Sanjoy ( Orcid Icon 0000-0002-1509-0382 )
dc.contributor.authorSohal, Sandeep ( Orcid Icon 0000-0003-4235-9778 )
dc.contributor.authorGrice, Corey R. ( Orcid Icon 0000-0002-0841-5943 )
dc.contributor.authorYan, Yanfa ( )
dc.contributor.authorHoltz, Mark ( Orcid Icon 0000-0001-9524-964X )
dc.contributor.authorLi, Jian V. ( )
dc.date.accessioned2019-10-01T15:02:37Z
dc.date.available2019-10-01T15:02:37Z
dc.date.issued2018-09
dc.identifier.citationMia, M. D., Swartz, C. H., Paul, S., Sohal, S., Grice, C. R., Yan, Y., Holtz, M., & Li, J. V. (2018). Electrical and optical characterization of CdTe solar cells with CdS and CdSe buffers: A comparative study. Journal of Vacuum Science and Technology, 36(5).en_US
dc.identifier.urihttps://digital.library.txstate.edu/handle/10877/8651
dc.description.abstractA study is reported comparing the electrical and optical properties of CdTe solar cells, prepared using CdS and CdSe buffer layers, to investigate defects in the bulk and interface, carrier transport, and recombination. Temperature dependent capacitance–voltage measurement and admittance spectroscopy were used to extract carrier concentration, resistivity, charge carrier mobility, and their temperature dependence. The authors identify the presence of two defect signatures corresponding to carrier freeze-out and the formation of a Schottky back-contact barrier. The back-contact barrier height (≈300 meV) extracted from the temperature dependent current density–voltage (JVT) experiment was confirmed by conventional admittance spectroscopy. The activation energies of mobility (resistivity) are 101.2 ± 2.5 meV (92.6 ± 2.3 meV) and 84.7 ± 2.7 meV (77.6 ± 4.5 meV) for CdS and CdSe buffer layers, respectively. Intensity dependent photoluminescence analysis demonstrates that the CdSe/CdTe device exhibits lower radiative efficiency than the CdS/CdTe device. This confirms the presence of higher defects in the CdSe/CdTe device corroborated by temperature dependent VOC analysis. The comparative electrical and optical analysis provides insight into improving the performance of CdTe solar cell device by selenization.en_US
dc.formatText
dc.format.extent9 pages
dc.format.medium1 file (.pdf)
dc.language.isoen_USen_US
dc.publisherAmerican Institute of Physicsen_US
dc.sourceJournal of Vacuum Science and Technology, 2018, Vol. 36, No. 5.
dc.subjectCdTe solar cellsen_US
dc.subjectElectrical characterizationen_US
dc.subjectOptical characterizationen_US
dc.subjectBuffer layersen_US
dc.titleElectrical and Optical Characterization of CdTe Solar Cells with CdS and CdSe Buffers: A Comparative Studyen_US
txstate.documenttypeArticle
dc.identifier.doihttps://doi.org/10.1116/1.5044219
txstate.departmentPhysics


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