Bipolar resistive switching characteristics of poly(3,4-ethylene-dioxythiophene): Poly(styrenesulfonate) thin film
- Authors
- Jeong, Hu Young; Kim, Jong Yun; Yoon, Tae Hyun; Choi, Sung-Yool
- Issue Date
- Jan-2010
- Publisher
- ELSEVIER
- Keywords
- PEDOT:PSS; Resistive switching; TEM; EDS
- Citation
- CURRENT APPLIED PHYSICS, v.10, no.1, pp.E46 - E49
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 10
- Number
- 1
- Start Page
- E46
- End Page
- E49
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/175580
- DOI
- 10.1016/j.cap.2009.12.011
- ISSN
- 1567-1739
- Abstract
- We investigated the reversible resistive switching of poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) thin films sandwiched between Al electrodes. The J-V sweep curve showed a hysteretic behavior which depends on the polarity of the applied voltage bias. From the analysis of I-V curves, it was revealed that the charge transport through the junction was governed by the bulk space-charge-limited conduction (SCLC) model. Using transmission electron microscopy (TEM) analysis, it was confirmed that the initial high resistance state of PEDOT:PSS films is related with the segregation of PSS chains induced by redox reaction between a Al metal electrode and PEDOT:PSS film. Positive space charges present on the top region of PEDOT:PSS films can be proposed as a possible trap centers of electron trapping and detrapping process.
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