Publication:
Anomalous p-type characteristic and recrystallization upon aging of hot-cast CH3NH3PbI3 perovskite thin films grown under atmospheric air

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Issued Date

2023

Resource Type

Article

File Type

application/pdf

DOI

10.1016/j.tsf.2023.140048

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Thin Solid Films. Vol 783, No. (2023)

Suggested Citation

Faibut N., Jarernboon W., Harnchana V., Supasai T., Rujisamphan N., Pimanpang S., Amornkitbamrung V. Anomalous p-type characteristic and recrystallization upon aging of hot-cast CH3NH3PbI3 perovskite thin films grown under atmospheric air. Thin Solid Films. Vol 783, No. (2023). doi:10.1016/j.tsf.2023.140048 Retrieved from: https://hdl.handle.net/20.500.14740/10753

Title

Anomalous p-type characteristic and recrystallization upon aging of hot-cast CH3NH3PbI3 perovskite thin films grown under atmospheric air

Author(s)

Faibut N.
 Jarernboon W.
 Harnchana V.
 Supasai T.
 Rujisamphan N.
 Pimanpang S.
 Amornkitbamrung V.

Other Contributor(s)

Srinakharinwirot University

Abstract

Hot-cast CH3NH3PbI3 perovskite thin films are fabricated in ambient air using heated substrates. All the perovskite films prepared are stored in a low-humidity environment. Interestingly, it has been observed that the perovskite films fabricated with high-temperature substrates degrade at a slower rate compared to those prepared at lower temperatures. Even after one week, the morphology of the films remains unchanged when produced with high-temperature substrates under 35–40 % relative humidity (RH). The hot-cast films exhibit p-type characteristics, as evidenced by their surface photovoltage signals. During the aging process, the iodine ions seem to vaporize as evidenced by the reduction of the I/Pb ratios in the energy-dispersive X-ray spectroscopy (EDX) spectra. The hot-cast perovskite films show relatively low surface trap states, ranging from 1015–1016 cm−3, along with low energy band tails of approximately 20 meV. © 2023 Elsevier B.V.

Subject(s)

Aging effect
 Hot-casting
 Methylammonium lead triiodide
 P-type
 Trap state density

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URI

https://hdl.handle.net/20.500.14740/10753

Collections

Scopus: Year 2023

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