A high open-circuit voltage inverted perovskite solar cell based on a CH3NH3PbBr3 absorber and ICBA acceptor is reported. The CH3NH3PbBr3 film fabricated under ambient atmosphere at a moderate temperature (100 degrees C) using a two-step spin-coating method is composed of aggregated nano-grains. Upon solvent annealing of the CH3NH3PbBr3/ICBA film, the efficiency of the resulting cell increases from 1.71% to 7.50% with a remarkably high open circuit voltage (V-oc) of ca. 1.60 V. ICBA acts not only as a high LUMO acceptor to realize high V-oc but also as a mending agent to increase the efficiency of the cell by penetrating into the defects/voids of the CH3NH3PbBr3 film via solvent annealing as evidenced by TRPL, XPS and SEM data. Solvent annealing of the active layer was proved to be simple and effective device engineering to improve the efficiency of the perovskite cell based on a low quality film and the V-oc of the inverted perovskite cell can be tuned by the LUMO level of the acceptor were revealed. The CH3NH3PbBr3/ICBA film is semi-transparent with an average 50% transmittance under visible light. The moderatetemperature processed CH3NH3PbBr3 solar cell with high V-oc and a semi-transparent absorber has great potential for application as the top cell in a tandem solar cell.
机构:
Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Noh, Jun Hong
;
Im, Sang Hyuk
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Kyung Hee Univ, Dept Chem Engn, Coll Engn, Youngin Si 446701, Gyeonggi Do, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Im, Sang Hyuk
;
Heo, Jin Hyuck
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Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Heo, Jin Hyuck
;
Mandal, Tarak N.
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Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
机构:
Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South KoreaSungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
机构:
Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
Peet, Jeffrey
;
Heeger, Alan J.
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Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
Heeger, Alan J.
;
Bazan, Guillermo C.
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Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
机构:
Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Noh, Jun Hong
;
Im, Sang Hyuk
论文数: 0引用数: 0
h-index: 0
机构:
Kyung Hee Univ, Dept Chem Engn, Coll Engn, Youngin Si 446701, Gyeonggi Do, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Im, Sang Hyuk
;
Heo, Jin Hyuck
论文数: 0引用数: 0
h-index: 0
机构:
Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
Heo, Jin Hyuck
;
Mandal, Tarak N.
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h-index: 0
机构:
Korea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South KoreaKorea Res Inst Chem Technol, Div Adv Mat, Taejon 305600, South Korea
机构:
Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South KoreaSungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
机构:
Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
Peet, Jeffrey
;
Heeger, Alan J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
Heeger, Alan J.
;
Bazan, Guillermo C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA