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Enhanced Electron Collection in Perovskite Solar Cells Employing Thermoelectric NaCo 2 O 4 /TiO 2 Coaxial Nanofibers
Author(s) -
Liu Tao,
Wang Cheng,
Hou Juan,
Zhang Chuanbo,
Chen Haijun,
He Hongcai,
Wang Ning,
Wu Hui,
Cao Guozhong
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201601616
Subject(s) - perovskite (structure) , coaxial , thermoelectric effect , materials science , energy conversion efficiency , nanofiber , power (physics) , optoelectronics , nanotechnology , computer science , engineering physics , physics , chemical engineering , telecommunications , engineering , quantum mechanics , thermodynamics
Thermoelectric NaCo 2 O 4 /TiO 2 coaxial nanofibers are prepared and distributed in the perovskite solar cells. Under illumination, p ‐type NaCo 2 O 4 can convert unwanted heat to thermal voltage, and thus promote the electron extraction and transport with the action of electrostatic force. These advantages collectively contribute to an overall power conversion efficiency improvement of ≈20% (15.14% vs 12.65%).