Broadband dye-sensitized upconverting nanocrystals enabled near-infrared planar perovskite solar cells
| Autor: | Xia Tao, Xitao Li, Xue-Sen Lai, Fan-Li Meng, Yan-Zhen Zheng, Xinding Lv |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Photovoltaic system Near-infrared spectroscopy Energy conversion efficiency Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Photon upconversion 0104 chemical sciences Planar Nanocrystal Optoelectronics Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology business Absorption (electromagnetic radiation) Perovskite (structure) |
| Zdroj: | Journal of Power Sources. 372:125-133 |
| ISSN: | 0378-7753 |
| Popis: | Extending the spectral absorption of perovskite solar cells (PSCs) from visible into near-infrared (NIR) range is a promising strategy to minimize non-absorption loss of solar photons and enhance the cell photovoltaic performance. Herein, we report on for the first time a viable strategy of incorporating IR806 dye-sensitized upconversion nanocrystals (IR806-UCNCs) into planar PSC for broadband upconversion of NIR light (800–1000 nm) into perovskite absorber-responsive visible emissions. A smart trick is firstly adopted to prepare hydrophilic IR806-UCNCs via a NOBF4 assisted two-step ligand-exchange that allows incorporating with perovskite precursor for in-situ growth of upconverting planar perovskite film. Unlike typically reported upconverting nanoparticles with narrow NIR absorption, the as-prepared IR806-UCNCs are able to harvest NIR light broadly and then transfer the captured energy to the UCNCs for an efficient visible upconversion. The IR806-UCNCs-incorporated cell exhibits a power conversion efficiency of 17.49%, corresponding to 29% increment from that of the pristine cell (13.52%). This strategy provides a feasible way to enable the most efficient harvesting of NIR sunlight for solar cells and other optoelectric devices. |
| Databáze: | OpenAIRE |
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