Transparent Ohmic Contacts for Solution-Processed, Ultrathin CdTe Solar Cells
Kurley JM, Panthani MG, Crisp R, Nanayakkara SU, Pach GF, Reese MO, Hudson MH, Dolzhnikov DS, Tanygin V, Luther JM, Talapin DV (2017)
Publication Status: Published
Publication Type: Journal article, Letter
Publication year: 2017
Journal
Publisher: AMER CHEMICAL SOC
Book Volume: 2
Pages Range: 270-278
Journal Issue: 1
DOI: 10.1021/acsenergylett.6b00587
Abstract
Recently, solution-processing became a viable route for depositing CdTe for use in photovoltaics. Ultrathin (similar to 500 nm) solar cells have been made using colloidal CdTe nanocrystals with efficiencies exceeding 12% power conversion efficiency (PCE) demonstrated by using very simple device stacks. Further progress requires an effective method for extracting charge carriers generated during light harvesting. Here, we explored solution-based methods for creating transparent Ohmic contacts to the solution-deposited CdTe absorber layer and demonstrated molecular and nanocrystal approaches to Ohmic hole extracting contacts at the ITO/CdTe interface. We used scanning Kelvin probe microscopy to further show how the above approaches improved carrier collection by reducing the potential drop under reverse bias across the ITO/CdTe interface. Other methods, such as spin-coating CdTe/A(2)CdTe(2) (A = Na, K, Cs, N2H5), can be used in conjunction with current/light soaking to improve PCE further.
Authors with CRIS profile
Involved external institutions
University of Chicago
United States (USA) (US)
National Renewable Energy Laboratory (NREL)
United States (USA) (US)
Iowa State University of Science and Technology (ISU)
United States (USA) (US)
United States (USA) (US)
National Renewable Energy Laboratory (NREL)
United States (USA) (US)
Iowa State University of Science and Technology (ISU)
United States (USA) (US)
How to cite
APA:
Kurley, J.M., Panthani, M.G., Crisp, R., Nanayakkara, S.U., Pach, G.F., Reese, M.O.,... Talapin, D.V. (2017). Transparent Ohmic Contacts for Solution-Processed, Ultrathin CdTe Solar Cells. ACS Energy Letters, 2(1), 270-278. https://doi.org/10.1021/acsenergylett.6b00587
MLA:
Kurley, J. Matthew, et al. "Transparent Ohmic Contacts for Solution-Processed, Ultrathin CdTe Solar Cells." ACS Energy Letters 2.1 (2017): 270-278.
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