Robust perovskite formation via vacuum thermal annealing for indoor perovskite solar cells
Issued Date
2023-07-06
Resource Type
eISSN
20452322
Scopus ID
2-s2.0-85164248029
Pubmed ID
37414854
Journal Title
Scientific reports
Volume
13
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Scientific reports Vol.13 No.1 (2023) , 10933
Suggested Citation
Penpong K., Seriwatanachai C., Naikaew A., Phuphathanaphong N., Thant K.K.S., Srathongsian L., Sukwiboon T., Inna A., Sahasithiwat S., Pakawatpanurut P., Wongratanaphisan D., Ruankham P., Kanjanaboos P. Robust perovskite formation via vacuum thermal annealing for indoor perovskite solar cells. Scientific reports Vol.13 No.1 (2023) , 10933. doi:10.1038/s41598-023-37155-4 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/87975
Title
Robust perovskite formation via vacuum thermal annealing for indoor perovskite solar cells
Other Contributor(s)
Abstract
Perovskite materials are fascinating candidates for the next-generation solar devices. With long charge carrier lifetime, metal-halide perovskites are known to be good candidates for low-light harvesting. To match the irradiance spectra of indoor light, we configured a triple-cation perovskite material with appropriate content of bromide and chloride (FA0.45MA0.49Cs0.06Pb(I0.62Br0.32Cl0.06)3) to achieve an optimum band gap (Eg) of [Formula: see text]1.80 eV. With low photon flux at indoor condition, minimal recombination is highly desirable. To achieve such goal, we, for the first time, combined dual usage of antisolvent deposition and vacuum thermal annealing, namely VTA, to fabricate a high-quality perovskite film. VTA leads to compact, dense, and hard morphology while suppressing trap states at surfaces and grain boundaries, which are key culprits for exciton losses. With low-cost carbon electrode architecture, VTA devices exhibited average power conversion efficiency (PCE) of 27.7 ± 2.7% with peak PCE of 32.0% (Shockley-Queisser limit of 50-60%) and average open-circuit voltage (Voc) of 0.93 ± 0.02 V with peak Voc of 0.96 V, significantly more than those of control and the vacuum treatment prior to heat.