Publication: Low-temperature processable Sn-doped ZnO films as electron transporting layers for perovskite solar cells
Issued Date
2021-12-01
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ISSN
1573482X
09574522
09574522
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2-s2.0-85117035473
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Materials Science: Materials in Electronics. Vol.32, No.23 (2021), 27279-27289
Suggested Citation
Saowalak Homnan, Pakawat Malison, Koth Amratisha, Pongsakorn Kanjanaboos, Duangmanee Wongratanaphisan, Takashi Sagawa, Pipat Ruankham Low-temperature processable Sn-doped ZnO films as electron transporting layers for perovskite solar cells. Journal of Materials Science: Materials in Electronics. Vol.32, No.23 (2021), 27279-27289. doi:10.1007/s10854-021-07097-6 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76919
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Title
Low-temperature processable Sn-doped ZnO films as electron transporting layers for perovskite solar cells
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Abstract
Charge-transporting processable layers at a low temperature is a challenge for fabricating novel, highly stable and flexible optoelectronic devices. In fact, the crystallization of metal oxide usually needs to be processed under a high-temperature to obtain excellent semiconducting properties. In this work, Sn-doped ZnO (TZO) thin films, as electron transporting layers (ETLs) in perovskite solar cells, were prepared via sol–gel method at a temperature of less than 180 °C. The effects of annealing temperature on the properties of TZO thin films were investigated. It was found that the electrical properties of the TZO films were improved with increasing annealing temperature. In addition, an elemental composition analysis revealed that a temperature of only 140 °C sufficed for converting the precursor gel film into TZO film. The perovskite solar cell, which utilized a low-temperature TZO thin film, yielded a better power conversion efficiency than one with high-temperature ETLs (180 °C). These results imply that discovering low-temperature ETL processing for sol–gel enables good-quality metal oxide ETL, which can also be used in flexible solar cell applications.