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Electrical properties of nitric acid and DMSO treated PEDOT:PSS/n‐Si hybrid heterostructures for optoelectronic applications
Author(s) -
Anitha R.,
Me Sumithra S.,
Bhalerao Gopalkrishna,
Siddham Pradeep,
Baskar K.,
Singh Shubra
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48952
Subject(s) - pedot:pss , materials science , heterojunction , optoelectronics , fabrication , spin coating , layer (electronics) , surface roughness , electrical resistivity and conductivity , chemical engineering , nanotechnology , coating , composite material , medicine , alternative medicine , engineering , pathology , electrical engineering
Organic/inorganic heterostructures are an emerging and interesting field of research for optoelectronics. In this work, an efficient organic/inorganic hybrid heterojunction between PEDOT:PSS and n‐type Silicon has been fabricated for optoelectronic applications. Samples with varying thickness of PEDOT:PSS were prepared by spin coating technique and the electrical conductivity of organic layers was modified using DMSO as additive. Post fabrication, the hybrid heterostructures were treated with HNO 3 vapor so as to enhance the conductivity of the organic layer. Surface treatment with HNO 3 was found to lower the roughness of the organic layer and enhance the transparency of the layer. I – V characteristics reveal optimized behavior of HNO 3 treated PEDOT:PSS layer with a low Ideality factor ( n ~3.2) and a barrier height (Φ B ) of 0.8 eV. The findings of the study provide a promising efficient method to enhance the electrical and device properties of PEDOT:PSS/n‐Si heterostructures for optoelectronic applications. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48952.