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Ambient air-process...
Ambient air-processed mixed-ion perovskites for high-efficiency solar cells
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- Sveinbjörnsson, Kári (author)
- Uppsala universitet,Fysikalisk kemi
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- Aitola, Kerttu (author)
- Uppsala universitet,Fysikalisk kemi
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- Zhang, Jinbao (author)
- Uppsala universitet,Fysikalisk kemi
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- Johansson, Malin B. (author)
- Uppsala universitet,Fysikalisk kemi
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- Zhang, Xiaoliang (author)
- Uppsala universitet,Fysikalisk kemi
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- Correa-Baena, Juan-Pablo (author)
- Ecole Polytech Fed Lausanne, Lab Photomol Sci, EPFL SB ISIC LSPM, CH G1 523,Chemin Alamb,Stn 6, CH-1015 Lausanne, Switzerland.
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- Hagfeldt, Anders (author)
- Ecole Polytech Fed Lausanne, Lab Photomol Sci, EPFL SB ISIC LSPM, CH G1 523,Chemin Alamb,Stn 6, CH-1015 Lausanne, Switzerland.
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- Boschloo, Gerrit (author)
- Uppsala universitet,Fysikalisk kemi,Uppsala Univ, Dept Chem, Angstrom Lab, Phys Chem, Box 523, S-75120 Uppsala, Sweden.
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- Johansson, Erik M. J. (author)
- Uppsala universitet,Fysikalisk kemi
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(creator_code:org_t)
- 2016
- 2016
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 4:42, s. 16536-16545
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Mixed-ion (FAPbI(3))(1-x)(MAPbBr(3))(x) perovskite solar cells have achieved power conversion efficiencies surpassing 20%. However, in order to obtain these high efficiencies the preparation is performed in a controlled inert atmosphere. Here, we report a procedure for manufacturing highly efficient solar cells with a mixed-ion perovskite in ambient atmosphere. By including a heating step at moderate temperatures of the mesoporous titanium dioxide substrates, and spin-coating the perovskite solution on the warm substrates in ambient air, a red intermediate phase is obtained. Annealing the red phase at 100 degrees C results in a uniform and crystalline perovskite film, whose thickness is dependent on the substrate temperature prior to spin-coating. The temperature was optimized between 20 and 100 degrees C and it was observed that 50 degrees C substrate temperature yielded the best solar cell performances. The average efficiency of the best device was 17.6%, accounting for current-voltage (I-V) measurement hysteresis, with 18.8% performance in the backward scan direction and 16.4% in the forward scan direction. Our results show that it is possible to manufacture high-efficiency mixed-ion perovskite solar cells under ambient conditions, which is relevant for large-scale and low-cost device manufacturing processing.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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