Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.solmat.2012.03.008
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dc.titleMethod for quantifying optical parasitic absorptance loss of glass and encapsulant materials of silicon wafer based photovoltaic modules
dc.contributor.authorKhoo, Y.S.
dc.contributor.authorWalsh, T.M.
dc.contributor.authorLu, F.
dc.contributor.authorAberle, A.G.
dc.date.accessioned2014-10-07T04:32:21Z
dc.date.available2014-10-07T04:32:21Z
dc.date.issued2012-07
dc.identifier.citationKhoo, Y.S., Walsh, T.M., Lu, F., Aberle, A.G. (2012-07). Method for quantifying optical parasitic absorptance loss of glass and encapsulant materials of silicon wafer based photovoltaic modules. Solar Energy Materials and Solar Cells 102 : 153-158. ScholarBank@NUS Repository. https://doi.org/10.1016/j.solmat.2012.03.008
dc.identifier.issn09270248
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/82689
dc.description.abstractOptical losses in a photovoltaic (PV) module consist of reflectance losses and parasitic absorptance losses in the front layers of the module. A method for quantifying the optical losses associated with the cover glass and encapsulant material of silicon wafer based PV modules is presented. The method involves measuring the spectral reflectance (R) and the external quantum efficiency (EQE) of a silicon wafer solar cell before and after encapsulation. The approach used is to first obtain the internal quantum efficiency (IQE) of the cell using R and EQE of the cell before encapsulation. Assuming that the IQE of the cell is not changed by the encapsulation process, the spectrally resolved parasitic absorptance loss (A para.mod) associated with the cover glass and the encapsulant material is calculated with the aid of EQE and R measurements of the encapsulated cell. Using this method, the optical losses (at near normal incidence) of single-cell multicrystalline silicon wafer PV modules with two different ethylene vinyl acetate (EVA) encapsulants (conventional and super-clear EVA) are investigated and compared. Compared to conventional EVA, the module encapsulated with super-clear EVA is found to have much lower A para.mod at short wavelengths. © 2012 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.solmat.2012.03.008
dc.sourceScopus
dc.subjectOptical losses
dc.subjectParasitic absorptance
dc.subjectPhotovoltaic modules
dc.subjectQuantum efficiency
dc.subjectReflectance
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.departmentSOLAR ENERGY RESEARCH INST OF S'PORE
dc.description.doi10.1016/j.solmat.2012.03.008
dc.description.sourcetitleSolar Energy Materials and Solar Cells
dc.description.volume102
dc.description.page153-158
dc.description.codenSEMCE
dc.identifier.isiut000305100200025
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