Simple Method for Efficient Slot-Die Coating of MAPbI3 Perovskite Thin Films in Ambient Air Conditions
| Autor: | Gerrit Boschloo, Anuja Vijayan, Håkan Rensmo, Sebastian Svanström, Ute B. Cappel, Malin B. Johansson |
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| Rok vydání: | 2020 |
| Předmět: |
Solid-state chemistry
Materials science business.product_category Materialkemi Energy Engineering and Power Technology Halide 02 engineering and technology engineering.material 010402 general chemistry perovskite solar cells 7. Clean energy 01 natural sciences Article Coating scalable deposition techniques Photovoltaics Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Deposition (phase transition) Electrical and Electronic Engineering Thin film Perovskite (structure) grain size business.industry 021001 nanoscience & nanotechnology 0104 chemical sciences slot-die coating engineering Optoelectronics Die (manufacturing) 0210 nano-technology business hot casting |
| Zdroj: | ACS Applied Energy Materials |
| ISSN: | 2574-0962 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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