Lee, Sang-Won Bae, Soohyun Cho, Kyungjin Kim, Seongtak Hwang, Jae-Keun Lee, Wonkyu Lee, Solhee Hyun, Ji Yeon Lee, Seunghun Choi, Sung Bin Chun, Hongpil Kim, Won Mok Kang, Yoonmook Lee, Hae-Seok Kim, Donghwan 2024-01-19T19:30:56Z 2024-01-19T19:30:56Z 2021-09-04 2019-09 2574-0962 https://pubs.kist.re.kr/handle/201004/119644 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 cm(2) to 3 cm(2) without dividing areas by laser patterning, less than 4% open-circuit voltage (V-oc) and short-circuit current density (J(sc)) 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. English AMER CHEMICAL SOC IMPROVED PERFORMANCE CARRIER LIFETIME STABILITY ELECTRON EMERGENCE LENGTHS Sputtering of TiO2 for High-Efficiency Perovskite and 23.1% Perovskite/Silicon 4-Terminal Tandem Solar Cells Article 10.1021/acsaem.9b00801 1 ACS APPLIED ENERGY MATERIALS, v.2, no.9, pp.6263 - 6268 ACS APPLIED ENERGY MATERIALS 2 9 6263 6268 scie scopus 000487770000019 2-s2.0-85072739825 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article IMPROVED PERFORMANCE CARRIER LIFETIME STABILITY ELECTRON EMERGENCE LENGTHS perovskite solar cells transparent perovskite solar cells perovskite/silicon 4-terminal tandem radio frequency (RF) magnetron sputtering hole-blocking layer compact TiO2