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Stability of Doped Transparent Carbon Nanotube Electrodes
Author(s) -
Jackson Roderick,
Domercq Benoit,
Jain Rishabh,
Kippelen Bernard,
Graham Samuel
Publication year - 2008
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200800324
Subject(s) - materials science , doping , sheet resistance , carbon nanotube , pedot:pss , conductivity , transmittance , thermal stability , electrode , thermal conductivity , composite material , thin film , electrical resistivity and conductivity , nanotube , layer (electronics) , nanotechnology , optoelectronics , chemical engineering , chemistry , electrical engineering , engineering
This paper evaluates the effectiveness of p ‐doping transparent single‐walled carbon nanotube (SWNT) films via chemical treatment with HNO 3 and SOCl 2 . Stability of the improvement in electrical conductivity after doping is investigated for different doping treatments as a function of exposure time to air and as a function of temperature. Doped films were found to have a greater than twofold increase in conductivity with sheet resistance values as low as 105 Ω sq −1 with an optical transmittance of 80% at 550 nm. However, doping enhancements demonstrated limited stability in air and under thermal loading. The application of a thin capping layer of PEDOT/PSS is shown to stabilize the improvements in conductivity, evidenced by sustained lower sheet resistance in both air and under thermal loading.