Liquid Phase Deposition of TiO2 Films for Electron Transport Layer of Perovskite Solar Cells
| Authors | Ari Sulistyo Rini1, Mahagi P. Deraf1, H. Yanuar1 , A.A. Umar2 |
| Affiliations |
1Department of Physics, FMIPA, Universitas Riau, 28293 Pekanbaru, Indonesia 2Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Selangor, Bangi 43600, Malaysia |
| Е-mail | yanuar.hamzah@gmail.com |
| Issue | Volume 12, Year 2020, Number 3 |
| Dates | Received 11 February 2020; revised manuscript received 15 June 2020; published online 25 June 2020 |
| Citation | Ari Sulistyo Rini, Mahagi P. Deraf, H. Yanuar, et al., J. Nano- Electron. Phys. 12 No 3, 03019 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(3).03019 |
| PACS Number(s) | 68.03.Fg, 81.15.Lm |
| Keywords | TiO2 (17) , Liquid phase deposition, Electron transport material, FESEM (8) , Perovskite solar cell (2) . |
| Annotation |
The TiO2 layer plays an important role in organic lead-halide perovskite solar cells (PSCs) as an electron transport layer as well as a blocking layer to prevent carrier recombination at the interface of fluorine-doped tin oxide (FTO) and a perovskite layer. TiO2 thin film was successfully grown on FTO substrate using the liquid phase deposition method. In this work, TiO2 layers were grown at a temperature of 50 °C. The first layer was grown for 2 h and the second layer was subsequently grown at different durations, i.e. 1, 2, 3, and 4 h. The optical, structural and morphological properties of the samples were characterized using UV-vis spectroscopy, XRD and FESEM/EDX, respectively. The TiO2 thin film was then applied as an electron transport material (ETM) in the PSC n-i-p configuration. The UV-vis characterization results showed that the peak absorption spectrum of TiO2 thin films occurred in the wavelength range of 300-450 nm for all samples. The XRD pattern indicated that the sample is anatase TiO2 structure with the crystal orientation of (100), (004), (200) and (105) at the diffraction peak angle of 2(: 25.50º, 37.92º, 48.04º and 54.84°, respectively. FESEM characterization showed that the TiO2 nanostructure has a rod-like morphology. The PSC device fabricated utilizing the TiO2 sample with a second layer grown for 2 h exhibits the highest power conversion efficiency of 0.23 %. |
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List of References |
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