Sputtering of TiO2 for High-Efficiency Perovskite and 23.1% Perovskite/Silicon 4-Terminal Tandem Solar Cells

Title
Sputtering of TiO2 for High-Efficiency Perovskite and 23.1% Perovskite/Silicon 4-Terminal Tandem Solar Cells
Authors
김원목천홍필최성빈이상원배수현조경진김성택황재근이원규이솔희현지연이승훈강윤묵이해석김동환
Keywords
perovskite solar cells; transparent perovskite solar cells; perovskite/silicon 4-terminal tandem; radio frequency (RF) magnetron sputtering; hole-blocking layer; compact TiO2
Issue Date
2019-09
Publisher
ACS applied energy materials
Citation
VOL 2, NO 9-6268
Abstract
Radio frequency (RF) magnetron-sputtered TiO2 (RS-TiO2) is investigated as a hole-blocking layer for perovskite solar cells. RS-TiO2 shows conformal, dense, and efficiently electron transferable properties. Power conversion efficiency (PCEs) of 20.9% were obtained with high reproducibility. RS-TiO2 also showed potential in the up-scaling process, transparent perovskite, and perovskite/silicon 4-terminal tandem solar cells. With increasing active area 40 times from 0.075 cm2 to 3 cm2 without dividing areas by laser patterning, less than 4% open-circuit voltage (Voc) and short-circuit current density (Jsc) drops were observed. This means RS-TiO2 layers can maintain their film quality even when the area size is increased. Furthermore, by applying RS-TiO2 to transparent perovskite solar cells and perovskite/silicon 4-terminal tandem solar cells, PCEs of 16.7% and 23.1% were obtained, respectively.
URI
http://pubs.kist.re.kr/handle/201004/70460
ISSN
2574-0962
Appears in Collections:
KIST Publication > Article
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