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Interfacial Engineering of CdO–CdSe 3D Microarchitectures with in situ Photopolymerized PEDOT for an Enhanced Photovoltaic Performance
Author(s) -
Lim Iseul,
Shinde Dipak V.,
Patil Supriya A.,
Ahn Do Young,
Lee Wonjoo,
Shrestha Nabeen K.,
Lee Joong Kee,
Han SungHwan
Publication year - 2015
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12429
Subject(s) - pedot:pss , materials science , electrode , x ray photoelectron spectroscopy , chemical engineering , solar cell , auxiliary electrode , energy conversion efficiency , contact angle , analytical chemistry (journal) , thin film , optoelectronics , nanotechnology , polymer , composite material , chemistry , organic chemistry , electrolyte , engineering
In the present work, porous 3D CdO‐microstructured electrode obtained by pyrolysis of 3D Cd CO 3 microstructures is self‐sensitized with CdSe using an ion exchange reaction. After sensitization, an interfacial treatment of the CdO–CdSe interface is performed by depositing a thin film of PEDOT using a photoinduce polymerization route. The microstructured electrode before and after interfacial treatment is characterized using field‐emission scanning microscope, energy dispersive X‐ray analyzer, contact angle measurement, UV –Visible absorption spectrophotometer and X‐ray photoelectron spectrometer. After constructing a liquid junction solar cell with a Pt counter electrode, the photovoltaic performance and interfacial charge transfer kinetics across the CdO–CdSe interface before and after PEDOT treatment are investigated. The results exhibit an improved interfacial charge‐transfer resistance after the PEDOT treatment, which leads to enhance the short‐circuit current by 15.81% and the power conversion efficiency by 19.82%.