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Thin single crystal perovskite solar cells to harvest below-bandgap light absorption.
Chen, Zhaolai; Dong, Qingfeng; Liu, Ye; Bao, Chunxiong; Fang, Yanjun; Lin, Yun; Tang, Shi; Wang, Qi; Xiao, Xun; Bai, Yang; Deng, Yehao; Huang, Jinsong.
Afiliación
  • Chen Z; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Dong Q; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Liu Y; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Bao C; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Fang Y; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Lin Y; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Tang S; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Wang Q; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Xiao X; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Bai Y; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Deng Y; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA.
  • Huang J; Department of Mechanical and Materials Engineering, University of Nebraska, Lincoln, NE, 68588, USA. jhuang@unc.edu.
Nat Commun ; 8(1): 1890, 2017 12 01.
Article en En | MEDLINE | ID: mdl-29192232
ABSTRACT
The efficiency of perovskite solar cells has surged in the past few years, while the bandgaps of current perovskite materials for record efficiencies are much larger than the optimal value, which makes the efficiency far lower than the Shockley-Queisser efficiency limit. Here we show that utilizing the below-bandgap absorption of perovskite single crystals can narrow down their effective optical bandgap without changing the composition. Thin methylammonium lead triiodide single crystals with tuned thickness of tens of micrometers are directly grown on hole-transport-layer covered substrates by a hydrophobic interface confined lateral crystal growth method. The spectral response of the methylammonium lead triiodide single crystal solar cells is extended to 820 nm, 20 nm broader than the corresponding polycrystalline thin-film solar cells. The open-circuit voltage and fill factor are not sacrificed, resulting in an efficiency of 17.8% for single crystal perovskite solar cells.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2017 Tipo del documento: Article País de afiliación: Estados Unidos