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Walajabad S. Sampath
Researcher at Colorado State University
Publications - 192
Citations - 2652
Walajabad S. Sampath is an academic researcher from Colorado State University. The author has contributed to research in topics: Cadmium telluride photovoltaics & Thin film. The author has an hindex of 23, co-authored 176 publications receiving 2094 citations. Previous affiliations of Walajabad S. Sampath include Arizona State University.
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Apparatus and processes for the mass production of photovoltaic modules
TL;DR: In this paper, an apparatus and processes for large scale inline manufacturing of CdTe photovoltaic modules in which all steps, including rapid substrate heating, deposition of cdS, CdCl2 treatment, and ohmic contact formation, are performed within a single vacuum boundary at modest vacuum pressures.
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Polycrystalline CdSeTe/CdTe Absorber Cells With 28 mA/cm 2 Short-Circuit Current
Amit Munshi,Jason M. Kephart,Ali Abbas,John Raguse,Jean-Nicolas Beaudry,Kurt L. Barth,James R. Sites,John M. Walls,Walajabad S. Sampath +8 more
TL;DR: In this paper, an 800 nm CdSeTe layer was added to the CdTe absorber used in high-efficiency cdTe cells to increase the current and produce an increase in efficiency.
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Band alignment of front contact layers for high-efficiency CdTe solar cells
TL;DR: In this paper, SnO2-and ZnO-based alloys were tested as HRT layers on a fluorine-doped tin oxide transparent conducting oxide (TOSO).
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Understanding the role of selenium in defect passivation for highly efficient selenium-alloyed cadmium telluride solar cells
Thomas A. M. Fiducia,Budhika G. Mendis,Kexue Li,Chris R. M. Grovenor,Amit Munshi,Kurt L. Barth,Walajabad S. Sampath,Lewis D. Wright,Ali Abbas,Jake W. Bowers,John M. Walls +10 more
TL;DR: Fiducia et al. as mentioned in this paper showed that selenium enables higher luminescence efficiency and longer diffusion lengths in the alloyed material, indicating that Selenium passivates critical defects in the bulk of the absorber layer.
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Polycrystalline CdTe photovoltaics with efficiency over 18% through improved absorber passivation and current collection
Amit Munshi,Jason M. Kephart,Ali Abbas,Tushar M. Shimpi,Kurt L. Barth,John M. Walls,Walajabad S. Sampath +6 more
TL;DR: In this article, a sputtered multilayer metal-oxide anti-reflection layer was proposed for CdTe photovoltaic devices with conversion efficiencies over 18% and a fill factor greater than 79%.