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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Room-temperature contactless electroreflectance (CER) was used to investigate the optical properties of a N,N′-didecylperylene-3,4,9,10- tetracarboxylic diimide (PTCDI-C 10 H 21 ) 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.

Original languageEnglish
Title of host publicationPhotonic Fiber and Crystal Devices
Subtitle of host publicationAdvances in Materials and Innovations in Device Applications V
DOIs
Publication statusPublished - 2011 Oct 11
EventPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V - San Diego, CA, United States
Duration: 2011 Aug 212011 Aug 22

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8120
ISSN (Print)0277-786X

Other

OtherPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V
CountryUnited States
CitySan Diego, CA
Period11-08-2111-08-22

Fingerprint

ITO glass
Molecular orbitals
ITO (semiconductors)
Optical Properties
Thin Films
Optical properties
Stark effect
optical properties
Thin films
Optical transitions
Bias currents
molecular orbitals
Electronic states
thin films
Tin oxides
Aluminum
Indium
Absorption spectra
glass
Electric fields

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Chen, W. J., Chang, M. H., Chang, C. C., Tsai, M. C., Cheng, H-L., & Chou, W-Y. (2011). Optical properties of PTCDI thin films studied by contactless electroreflectance. In Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V [81201E] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8120). https://doi.org/10.1117/12.893479
Chen, Wei Juann ; Chang, Ming Hau ; Chang, Chung Chih ; Tsai, Min Chih ; Cheng, Horng-Long ; Chou, Wei-Yang. / Optical properties of PTCDI thin films studied by contactless electroreflectance. Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V. 2011. (Proceedings of SPIE - The International Society for Optical Engineering).
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title = "Optical properties of PTCDI thin films studied by contactless electroreflectance",
abstract = "Room-temperature contactless electroreflectance (CER) was used to investigate the optical properties of a N,N′-didecylperylene-3,4,9,10- tetracarboxylic diimide (PTCDI-C 10 H 21 ) 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.",
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Chen, WJ, Chang, MH, Chang, CC, Tsai, MC, Cheng, H-L & Chou, W-Y 2011, Optical properties of PTCDI thin films studied by contactless electroreflectance. in Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V., 81201E, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V, San Diego, CA, United States, 11-08-21. https://doi.org/10.1117/12.893479

Optical properties of PTCDI thin films studied by contactless electroreflectance. / Chen, Wei Juann; Chang, Ming Hau; Chang, Chung Chih; Tsai, Min Chih; Cheng, Horng-Long; Chou, Wei-Yang.

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V. 2011. 81201E (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8120).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Chen WJ, Chang MH, Chang CC, Tsai MC, Cheng H-L, Chou W-Y. Optical properties of PTCDI thin films studied by contactless electroreflectance. In Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V. 2011. 81201E. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.893479