Cited 3 time in webofscience Cited 3 time in scopus

UV-Curable Polymer-QD Flexible Films as the Downconversion Layer for Improved Performance of Cu(In,Ga)Se2Solar Cells

Title
UV-Curable Polymer-QD Flexible Films as the Downconversion Layer for Improved Performance of Cu(In,Ga)Se2Solar Cells
Authors
Nazim, MohammedKim, ByungwooLee, SangwookMin, Byoung KounKim, Jae Hyun
DGIST Authors
Kim, Jae Hyun
Issue Date
2020-11
Citation
Energy and Fuels, 34(11), 14581-14590
Type
Article
Article Type
Article
Keywords
Graphene quantum dotsLayered semiconductorsLightNanocomposite filmsAdhesivesUltra-violet lightUltraviolet curableUV curable polymerQuantum efficiencyCopper compoundsCuringGallium compoundsGrapheneNanocrystalsPhotonsPolymer filmsSemiconductor quantum dotsSolar cellsThin filmsExternal quantum efficiencyFunctionalized grapheneHigh energy photonsLow energy photonsRelative performance
ISSN
0887-0624
Abstract
The downconversion process effectively traps high-energy photons of ultraviolet light and converts them into low-energy photons for utilization in solar cells. In this work, transparent, highly emissive, ultraviolet (UV)-curable nitrogen-functionalized graphene quantum dot-dispersed Norland Optical Adhesive (NOA) nanocomposite (herein denoted as poly-QD film) flexible films were applied as luminescent downconversion (LDC) layers to boost the efficiency of copper indium gallium selenide solar cells. The N-graphene quantum dots (GQDs) were embedded into clear, colorless UV-curable NOA polymer matrices via the clickreaction of thiol-ene components under UV light at room temperature. The best poly-QD film showed a high emission peak of >500 nm and improved external quantum efficiency in the high-energy solar spectrum, resulting in the highest efficiency of ∼9.70% (compared to 8.77% for bare cells), which triggered an ∼10.60% relative performance increment compared to bare copper indium gallium selenide (CIGS) solar cells. Hence, the overall CIGS solar cell performance enhancement caused mainly by Jsc improvement of ∼9.06% (relative enhancement) due to efficient trapping of short-wavelength photons. As-prepared poly-QD films were applied as LDC layers, which significantly boost quantum efficiency in short-wavelength spectra. © 2020 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/12758
DOI
10.1021/acs.energyfuels.0c02741
Publisher
American Chemical Society
Related Researcher
  • Author Kim, Jae Hyun  
  • Research Interests 에너지, 배터리, 고체전해질, 태양전지, 전기차, 리튬이온배터리
Files:
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Collection:
Division of Energy Technology1. Journal Articles


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