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Au‐Coated Honeycomb Structure as an Efficient TCO‐Free Counter‐Electrode for Quantum‐Dot‐Sensitized Solar Cells
Author(s) -
Dao VanDuong,
Bui VanTien,
Baek Minki,
Phan TheLong,
Yong Kijung,
Choi HoSuk
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201704374
Subject(s) - electrode , fabrication , materials science , quantum dot , petri dish , optoelectronics , auxiliary electrode , sputtering , nanotechnology , honeycomb , energy conversion efficiency , thin film , composite material , electrolyte , chemistry , medicine , alternative medicine , pathology , biology , genetics
This study reports the fabrication of a Petri dish patterned with cylindrical micro‐cavities that are produced using a one‐step solvent‐immersion phase‐separation process. The developed 3D honeycomb Petri dish is coated with a Au film through a sputtering method to be an efficient Au‐coated FTO‐free electrode for quantum‐dot‐sensitized solar cells. Due to the high specific active surface area of the electrode with the Au‐coated honeycomb structure, the energy conversion efficiency of devices that use this electrode is 5.2 % compared to 4.4 and 4.7 % by devices using an Au‐coated flat Petri dish and an Au‐coated FTO electrode, respectively. This design strategy offers excellent potential for the fabrication of highly efficient counter electrodes with FTO‐free substrates of flexible photovoltaic devices.