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Simple Method for Efficient Slot-Die Coating of MAPbI(3) Perovskite Thin Films in Ambient Air Conditions
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- Vijayan, Anuja (author)
- Uppsala universitet,Fysikalisk kemi
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- Johansson, Malin B, 1972- (author)
- Uppsala universitet,Fysikalisk kemi
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- Svanström, Sebastian (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- (creator_code:org_t)
- 2020-04-20
- 2020
- English.
- In: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 3:5, s. 4331-4337
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Scalable methods for deposition of lead halide perovskite thin films are required to enable commercialization of the highly promising perovskite photovoltaics. Here, we have developed a slot-die coating process under ambient conditions for methylammonium lead iodide (MAPbI(3)) perovskite on heated substrates (about 90 degrees C on the substrate surface). Dense, highly crystalline perovskite films with large grains (100-200 mu m) were obtained by careful adjustment of the deposition parameters, using solutions that are similar but more dilute than those used in typical spin-coating procedures. Without any further after treatments, such as antisolvent treatment or vapor annealing, we achieved power conversion efficiencies up of 14.5% for devices with the following structure: conducting tin oxide glass (FTO)/TiO2/MAPbI(3)/spiro-MeOTAD/Au. The performance was limited by the significant roughness of the deposited films, resulting from the hot-casting method, and the relatively high deposition temperature, which led to a defect-rich surface due to loss of MAI.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- slot-die coating
- perovskite solar cells
- grain size
- scalable deposition techniques
- hot casting
Publication and Content Type
- ref (subject category)
- art (subject category)
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