講演抄録/キーワード |
講演名 |
2013-05-16 13:50
低分子量PEDOT蒸着膜の作製とドーピング特性 江口大海・○長谷川 愛・土屋康佑・田中邦明・荻野賢司・臼井博明(東京農工大) OME2013-24 エレソ技報アーカイブへのリンク:OME2013-24 |
抄録 |
(和) |
Poly(3,4-ethylenedioxythiophene) (PEDOT)は導電性高分子の中でも高い導電性や熱的安定性を示すが,PEDOT単体での薄膜形成は困難である.PEDOTをPolystyrene sulfonate (PSS)と複合化し,水中で安定な微粒子状の分散体を形成することでウェットプロセスでの製膜が可能となるが,PSSの高い酸性度によるデバイスの腐食などの悪影響が懸念される.そこで本研究では分子量の低いPEDOTを合成し,物理蒸着法によるPEDOT薄膜の作製を試みた.得られた薄膜は赤外吸収および紫外・可視光吸収により光学的特性を評価し,I-V測定によって電気的特性を評価した.その結果,蒸着膜は可視光領域において高い透明性を示し,PEDOT単体の蒸着膜の導電率は10-8 S cm-1程度であった.さらに,PEDOT蒸着膜に熱アニール処理を行った結果,膜の耐溶媒性が向上するとともに,導電率が10~100倍上昇した.また,蒸着膜をI2蒸気にさらしてドーピングした結果,導電率が約1 S cm-1に上昇した. |
(英) |
Poly (3,4-ethylenedioxythiophene) (PEDOT) is one of the well-known conductive polymers that has excellent thermal stability and high conductivity. However, it is difficult to prepare thin films of PEDOT by itself. The common method of film formation is to use a composite of PEDOT with polystyrene sulfonate (PSS) to form water dispersion that can be deposited by wet-coating methods. However, the high acidity of PSS is known to cause such disadvantage as corrosion of devices. In this paper, low-molecular weight PEDOT was synthesized and its thin films were prepared by physical vapor deposition. The deposited films were optically characterized by IR spectra and UV-Vis spectra and electrically characterized by current-voltage measurement. It was found that deposited PEDOT film had good optical transparency, and its electrical conductivity was about 10-8 S cm-1. Deposited PEDOT film has been subjected to thermal annealing, which improved resistance of the films against organic solvents and also increased the electrical conductivity by 10 to 100 times. The deposited film was exposed to I2-vapor for doping, which increased the conductivity of the film to 1 S cm-1. |
キーワード |
(和) |
PEDOT / 導電性高分子 / 物理蒸着 / ドーピング / / / / |
(英) |
PEDOT / conductive polymer / vapor deposition / doping / / / / |
文献情報 |
信学技報, vol. 113, no. 42, OME2013-24, pp. 7-12, 2013年5月. |
資料番号 |
OME2013-24 |
発行日 |
2013-05-09 (OME) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
OME2013-24 エレソ技報アーカイブへのリンク:OME2013-24 |