Synergistic Doping of Fullerene Electron Transport Layer and Colloidal Quantum Dot Solids Enhances Solar Cell Performance | Zendy

Yuan Mingjian | Zendy; Voznyy Oleksandr | Zendy; Zhitomirsky David | Zendy; Kanjanaboos Pongsakorn | Zendy; Sargent Edward H. | Zendy

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Synergistic Doping of Fullerene Electron Transport Layer and Colloidal Quantum Dot Solids Enhances Solar Cell Performance

Author(s) -

Yuan Mingjian,

Voznyy Oleksandr,

Zhitomirsky David,

Kanjanaboos Pongsakorn,

Sargent Edward H.

Publication year - 2015

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201404411

Subject(s) - doping , quantum dot , limiting , materials science , fullerene , nanotechnology , optoelectronics , layer (electronics) , electron , computer science , physics , mechanical engineering , engineering , quantum mechanics

The spatial location of the predominant source of performance‐limiting recombination in today's best colloidal quantum dot (CQD) cells is identified, pinpointing the TiO 2 :CQD junction; then, a highly n‐doped PCBM layer is introduced at the CQD:TiO 2 heterointerface. An n‐doped PCBM layer is essential to maintain the depletion region and allow for efficient current extraction, thereby producing a record 8.9% in overall power conversion efficiency.

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