期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 13, 页码 4280-4284出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201600702
关键词
near-infrared; photovoltaic devices; polymers; solar cells; upconversion nanoparticles
资金
- Air Force Office of Scientific Research [FA9550-13-1-0101]
- National Science Foundation [ECCS-1305087]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1305087] Funding Source: National Science Foundation
Extending the spectral absorption of organolead halide perovskite solar cells from visible into near-infrared (NIR) range renders the minimization of non-absorption loss of solar photons with improved energy alignment. Herein, we report on, for the first time, a viable strategy of capitalizing on judiciously synthesized monodisperse NaYF4:Yb/Er upconversion nanoparticles (UCNPs) as the mesoporous electrode for CH3NH3PbI3 perovskite solar cells and more importantly confer perovskite solar cells to be operative under NIR light. Uniform NaYF4:Yb/Er UCNPs are first crafted by employing rationally designed double hydrophilic star-like poly(acrylic acid)-block-poly(ethylene oxide) (PAA-b-PEO) diblock copolymer as nanoreactor, imparting the solubility of UCNPs and the tunability of film porosity during the manufacturing process. The subsequent incorporation of NaYF4:Yb/Er UCNPs as the mesoporous electrode led to a high efficiency of 17.8%, which was further increased to 18.1% upon NIR irradiation. The insitu integration of upconversion materials as functional components of perovskite solar cells offers the expanded flexibility for engineering the device architecture and broadening the solar spectral use.
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