Viscosity effect of ionic liquid-assisted controlled growth of CH3NH3PbI3 nanoparticle-based planar perovskite solar cells
| Autor: | Kazuaki Ninomiya, Kenji Takahashi, Kosuke Kuroda, Makoto Karakawa, Yoshikazu Furumoto, Keitarou Hamada, Tetsuya Taima, Kohshin Takahashi, Kyosuke Yonezawa, Kohei Yamamoto, Takayuki Kuwabara, Md. Shahiduzzaman |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Biomaterials chemistry.chemical_compound Viscosity Crystallinity law Materials Chemistry Electrical and Electronic Engineering Thin film Crystallization Perovskite (structure) Spin coating General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical engineering Ionic liquid 0210 nano-technology |
| Zdroj: | Organic Electronics. 48:147-153 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2017.06.001 |
| Popis: | A precise control of the morphology and crystallization of perovskite thin-films is well-correlated to higher perovskite solar cells performances. Ionic liquids (ILs) can retard perovskite crystallization to aid the formation of films with uniform morphology to realize highly efficient perovskite solar cells. Herein, we attempt to control the nanostructural growth of CH3NH3PbI3 thin films by adding ILs to the perovskite spin-coating solution and investigate the effect of IL viscosity on the resulting CH3NH3PbI3 nanoparticle (NP) thin films. NPs with desirable morphology were obtained using ILs with a low viscosity that completely dissolved in the CH3NH3PbI3 solution. In particular, the IL tetrabutylammonium chloride yielded NPs with a diameter of 500 nm and controllable morphology, crystallinity, and absorption behavior, which led to improved photovoltaic performance compared with that of solar cells containing NPs produced using other ILs. Our findings revealed a pathway to obtain uniformly distributed CH3NH3PbI3 NP thin films for use in perovskite solar cells. The developed method is well suited for large-scale production of perovskite thin films on flexible substrates. |
| Databáze: | OpenAIRE |
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