Room-Temperature Processing of TiOx Electron Transporting Layer for Perovskite Solar Cells
| Autor: | Mool C. Gupta, Joshua J. Choi, Narasimha S. Prasad, George C. Wilkes, Alexander Z. Chen, Xiaoyu Deng |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Energy conversion efficiency Nanotechnology 02 engineering and technology Hybrid solar cell 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Amorphous solid Solar cell efficiency Optoelectronics General Materials Science Electrical measurements Physical and Theoretical Chemistry Thin film 0210 nano-technology business Layer (electronics) Perovskite (structure) |
| Zdroj: | The Journal of Physical Chemistry Letters. 8:3206-3210 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/acs.jpclett.7b01466 |
| Popis: | In order to realize high-throughput roll-to-roll manufacturing of flexible perovskite solar cells, low-temperature processing of all device components must be realized. However, the most commonly used electron transporting layer in high-performance perovskite solar cells is based on TiO2 thin films processed at high temperature (>450 °C). Here, we demonstrate room temperature solution processing of the TiOx layer that performs as well as the high temperature TiO2 layer in perovskite solar cells, as evidenced by a champion solar cell efficiency of 16.3%. Using optical spectroscopy, electrical measurements, and X-ray diffraction, we show that the room-temperature processed TiOx is amorphous with organic residues, and yet its optical and electrical properties are on par with the high-temperature TiO2. Flexible perovskite solar cells that employ a room-temperature TiOx layer with a power conversion efficiency of 14.3% are demonstrated. |
| Databáze: | OpenAIRE |
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