UV-Curable Polymer-QD Flexible Films as the Downconversion Layer for Improved Performance of Cu(In,Ga)Se-2 Solar Cells
- Authors
- Nazim, Mohammed; Kim, Byungwoo; Lee, Sangwook; Min, Byoung Koun; Kim, Jae Hyun
- Issue Date
- 19-11월-2020
- Publisher
- AMER CHEMICAL SOC
- Citation
- ENERGY & FUELS, v.34, no.11, pp.14581 - 14590
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY & FUELS
- Volume
- 34
- Number
- 11
- Start Page
- 14581
- End Page
- 14590
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/51478
- DOI
- 10.1021/acs.energyfuels.0c02741
- 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 "click" reaction 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 similar to 9.70% (compared to 8.77% for bare cells), which triggered an similar to 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 J(sc) improvement of similar to 9.06% (relative enhancement) due to efficient trapping of short-wavelength photons. As-prepared poly-QD alms were applied as LDC layers, which significantly boost quantum efficiency in short-wavelength spectra.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholar.korea.ac.kr/handle/2021.sw.korea/51478)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.