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초록
We present that the carrier concentration injected from a silicon substrate to a copper phthalocyanine thin film depends on the incidence angle of photoexciting beam. At higher incidence angles of photoexciting beam, the modulation efficiency of terahertz transmission due to TM-polarized excitation is distinctly higher than one due to TE-polarized excitation. We find that this phenomenon is due to the enhancement of carrier injection which is expected when the incident light is more transmitted through the organic thin film. © 2013 SPIE.
키워드
organic thin film; polarization dependent transmission; terahertz modulation; Terahertz spectroscopy
- 제목
- Angle-dependent carrier injection in copper phthalocyanine thin films
- 저자
- Yoo, Hyung Keun; Yoon, Youngwoon; Lee, Hanju; Lee, Kiejin; Kang, Chul; Kee, Chul-Sik; Lee, Joong Wook
- 발행일
- 2013
- 유형
- Conference Paper
- 저널명
- Proceedings of SPIE - The International Society for Optical Engineering
- 권
- 8879