Abstract:
:Printable, wide band-gap chalcopyrite compound films (CuInGaS2, CIGS) were synthesized on transparent conducting oxide substrates. The wide band-gap and defective nature of the films reveal semi-transparent and bifacial properties that are beneficial for power generating window applications. Importantly, solar cell devices with these films demonstrate a synergistic effect for bifacial illumination resulting in a 5.4-16.3% increase of the apparent power conversion efficiency compared to the simple sum of the efficiencies of the front and rear side illumination only. We also confirmed that this extra output power acquisition due to bifacial irradiation is apparently not influenced by the light intensity of the rear side illumination, which implies that weak light (e.g., indoor light) can be efficiently utilized to improve the overall solar cell efficiency of bifacial devices.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Moon SH,Park SJ,Hwang YJ,Lee DK,Cho Y,Kim DW,Min BKdoi
10.1038/srep04408subject
Has Abstractpub_date
2014-03-18 00:00:00pages
4408issn
2045-2322pii
srep04408journal_volume
4pub_type
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