期刊
NANO ENERGY
卷 40, 期 -, 页码 540-549出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.08.059
关键词
Perovskite; Nanostructure; Photon management; Localized grating; Energy transfer
类别
资金
- National Natural Science Foundation of China [51672008, 51673025]
- Young Talent Thousand Program
- ENN Group
Organic-inorganic perovskite solar cells have been highlighted as one of the most competitive thin film photovoltaics recently. It is promising to further raise the power conversion efficiency if high quality absorber is coupled with rational optical design for effective photon management. Here we demonstrate the implementation of perovskite nanostructure assembly by simple solution process to interfere the propagation of light inside the adjacent absorber. It enhances light harvesting to obtain higher attainable photocurrents and photovoltage in the resultant devices, achieving a decent power conversion efficiency (PCE) over 19% consequently. The presented nanostructure assembly integrates perovskite materials with desirable processibility and chemical compatibility by chemical synthesis and interface modification. For the first time, a synergetic localized gratings and enhanced fluorescence effect was demonstrated to govern photon management in perovskite solar cells. These findings may serve as a general guide to design and construct perovskite thin solar cells with efficiency approaching Shockley-Queisser limit.
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