Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells
Thermal evaporation is a very successful and widely adopted coating technique for the deposition of organic and inorganic materials on rough and textured surfaces and over large areas. Indeed, this technique is extensively used in the semiconductor industry for the fabrication of organic light emitt...
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doaj-91dfdff8225c42a7b07bd4f8f38824862020-11-29T00:04:01ZengMDPI AGCoatings2079-64122020-11-01101163116310.3390/coatings10121163Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar CellsJia Li0Hao Wang1Herlina Arianita Dewi2Nripan Mathews3Subodh Mhaisalkar4Annalisa Bruno5Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeEnergy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeEnergy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeEnergy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeEnergy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeEnergy Research Institute @ NTU (ERI@N), Nanyang Technological University, Singapore 637553, SingaporeThermal evaporation is a very successful and widely adopted coating technique for the deposition of organic and inorganic materials on rough and textured surfaces and over large areas. Indeed, this technique is extensively used in the semiconductor industry for the fabrication of organic light emitting diodes (OLEDs) and is commonly used in displays. In the last few years, thermal evaporated perovskite solar cells (PSCs) have also shown the potential to reach high power conversion efficiency (PCE) both on small and over large area devices. In this work, we present a detailed optimization of the potassium-based surface treatment used to improve the performances of our MAPbI<sub>3</sub> PSCs fabricated using the thermal co-evaporation technique. Small area planar n-i-p PSCs with an active area of 0.16 cm<sup>2</sup> achieved PCEs above 19% and the large area PSCs with an active area of 1 cm<sup>2</sup> reached 18.1%. These un-encapsulated PSCs also proved an excellent long-term shelf stability maintaining 90% of their initial PCEs for over six months when stored at ambient temperature.https://www.mdpi.com/2079-6412/10/12/1163co-evaporatedMAPbI<sub>3</sub>metal halide perovskiteperovskite solar cellspotassium treatment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jia Li Hao Wang Herlina Arianita Dewi Nripan Mathews Subodh Mhaisalkar Annalisa Bruno |
spellingShingle |
Jia Li Hao Wang Herlina Arianita Dewi Nripan Mathews Subodh Mhaisalkar Annalisa Bruno Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells Coatings co-evaporated MAPbI<sub>3</sub> metal halide perovskite perovskite solar cells potassium treatment |
author_facet |
Jia Li Hao Wang Herlina Arianita Dewi Nripan Mathews Subodh Mhaisalkar Annalisa Bruno |
author_sort |
Jia Li |
title |
Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells |
title_short |
Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells |
title_full |
Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells |
title_fullStr |
Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells |
title_full_unstemmed |
Potassium Acetate-Based Treatment for Thermally Co-Evaporated Perovskite Solar Cells |
title_sort |
potassium acetate-based treatment for thermally co-evaporated perovskite solar cells |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2020-11-01 |
description |
Thermal evaporation is a very successful and widely adopted coating technique for the deposition of organic and inorganic materials on rough and textured surfaces and over large areas. Indeed, this technique is extensively used in the semiconductor industry for the fabrication of organic light emitting diodes (OLEDs) and is commonly used in displays. In the last few years, thermal evaporated perovskite solar cells (PSCs) have also shown the potential to reach high power conversion efficiency (PCE) both on small and over large area devices. In this work, we present a detailed optimization of the potassium-based surface treatment used to improve the performances of our MAPbI<sub>3</sub> PSCs fabricated using the thermal co-evaporation technique. Small area planar n-i-p PSCs with an active area of 0.16 cm<sup>2</sup> achieved PCEs above 19% and the large area PSCs with an active area of 1 cm<sup>2</sup> reached 18.1%. These un-encapsulated PSCs also proved an excellent long-term shelf stability maintaining 90% of their initial PCEs for over six months when stored at ambient temperature. |
topic |
co-evaporated MAPbI<sub>3</sub> metal halide perovskite perovskite solar cells potassium treatment |
url |
https://www.mdpi.com/2079-6412/10/12/1163 |
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