Preparation of nanoscale inorganic CsPbIxBr3-x perovskite photosensitizers on the surface of mesoporous TiO2 film for solid-state sensitized solar cells
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadata
Title
Preparation of nanoscale inorganic CsPbIxBr3-x perovskite photosensitizers on the surface of mesoporous TiO2 film for solid-state sensitized solar cellsAuthor (s)
Date
2021-06-15Publisher
ElsevierISSN
0169-4332Bibliographic citation
So-Min Yoo; Seul-Yi Lee; Gitae Kim; Esteban Velilla Hernandez; Iván Mora-Seró; Seog Joon Yoon; Taeho Shin; Soul-Hee Lee; Seokhoon Ahn; Min-Kyoung Song; Myoung Kim; Hyo Joong Lee. . Preparation of Nanoscale Inorganic CsPbIxBr3-x Perovskite Photosensitizers on the Surface of Mesoporous TiO2 Film for Solid-State Sensitized Solar Cells. Applied Surface Science, 551 (2021), p. 149387Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0169433221004633Version
info:eu-repo/semantics/submittedVersionSubject
Abstract
Metal chalcogenide quantum dot (QD)-like all-inorganic nanoscale perovskite photosensitizers of CsPbIxBr3-x were prepared on the surface of mesoscopic TiO2 film by a direct two-step spin-coating of lead and cesium ... [+]
Metal chalcogenide quantum dot (QD)-like all-inorganic nanoscale perovskite photosensitizers of CsPbIxBr3-x were prepared on the surface of mesoscopic TiO2 film by a direct two-step spin-coating of lead and cesium halide precursors for application into solid-state dye-sensitized solar cells (DSSCs), as confirmed by impedance frequency response analysis. A few nanometer-sized hemisphere-shaped dots of CsPbIxBr3-x perovskites were deposited and distributed separately onto TiO2, which were checked by scanning and transmission electron microscopic (SEM and TEM) techniques. The as-deposited CsPbIxBr3-x perovskites were stable only in the case of including about 20% or more bromide in the composition of halides. When the bromide content increased in the ratio of halides of CsPbIxBr3-x, gradual decrease in lattice spacing and blue-shift of emission peaks were observed in X-ray diffraction (XRD) and photoluminescence (PL) measurements, respectively. These well-defined nano-particulate CsPbIxBr3-x perovskites were incorporated into solid-state DSSCs and tested as a new type of photosensitizers. The initial power conversion efficiency (PCE) of ca. 1.0–3.5% based on relatively thin mesoporous TiO2 film (~1 μm) looks promising with many parameters remaining for possibly more optimization. The best result, 3.79%, was obtained from CsPbI2.2Br0.80 25 days after initial measurement. These CsPbIxBr3-x-sensitized cells displayed a stable record of PCE over ~2 month and no hysteresis behavior in current-voltage traces. [-]
Is part of
Applied Surface Science, 2021, vol. 551Funder Name
National Research Foundation | National Research Foundation of Korea | Generalitat Valenciana | Colombia’s Administrative Department of Science Technology and Innovation (COLCIENCIAS) | Colombia Scientific Program
Project code
NRF-2019R1A1A2057772 | NRF-2020R1I1A3054429 | Prometeo/2018/098 | FP44842-124-2017 | FP44842- 218-2018
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Copyright © Elsevier B.V.
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info:eu-repo/semantics/openAccess
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