Optical properties of PTCDI thin films studied by contactless electroreflectance

Wei Juann Chen, Ming Hau Chang, Chung Chih Chang, Min Chih Tsai, Horng Long Cheng, Wei Yang Chou

研究成果: Conference contribution

摘要

Room-temperature contactless electroreflectance (CER) was used to investigate the optical properties of a N,N′-didecylperylene-3,4,9,10- tetracarboxylic diimide (PTCDI-C10H21) thin-film sandwiched between indium tin oxide and aluminum electrodes (Al/PTCDI/ITO/glass substrate) under vacuum conditions. The electromodulated optical responses of the Al/PTCDI/ITO/glass structures were characterized by various alternating current biases. The optical transitions of PTCDI were perturbed by energy shifts of electronic states due to the Stark effect induced by the modulated electric field. The modulated CER spectrum of PTCDI is strongly enhanced by performing first derivatives on the absorption spectrum of PTCDI. The CER spectrum involves fundamental transitions, doping states, and Davydov splitting. Moreover, the intensity of the field-induced transition peak of PTCDI increases with increasing CER modulation voltage. The transition energies between the lowest unoccupied molecular orbital and highest occupied molecular orbital of the Al/PTCDI/ITO system is obtained from the peak positions in the CER spectrum.

原文English
主出版物標題Photonic Fiber and Crystal Devices
主出版物子標題Advances in Materials and Innovations in Device Applications V
DOIs
出版狀態Published - 2011
事件Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V - San Diego, CA, United States
持續時間: 2011 八月 212011 八月 22

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
8120
ISSN(列印)0277-786X

Other

OtherPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V
國家/地區United States
城市San Diego, CA
期間11-08-2111-08-22

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電腦科學應用
  • 應用數學
  • 電氣與電子工程

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