Near infrared photo-detector using self-assembled formation of organic crystalline nanopillar arrays

Yoshiharu Ajiki, Tetsuo Kan, Masayuki Yahiro, Akiko Hamada, Junji Adachi, Chihaya Adachi, Kiyoshi Matsumoto, Isao Shimoyama

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

3 Citations (Scopus)

Abstract

We proposed a near infrared photo-detector (NIR-D) using self-assembled formation of organic crystalline arrays, which were formed on an n-type silicon (n-Si) substrate and covered with an Au film. These structures act as antennas for near infrared (NIR) light, resulting in an enhancement of the light absorption on the Au film. The NIR-Ds thus have higher photo-responsivity compared with that of an Au/n-Si typed Schottky diodes, which was fabricated as a reference. In this paper, the fabrication process of the NIR-Ds and the estimation results of photo-responsivity were described. The maximum responsivity to NIR light (wavelength = 1.2 μm) was 1.79 mA/W without applying forward bias. This value is 10 times larger than the responsivity of the Au/n-Si typed Schottky diode as a reference.

Original languageEnglish
Title of host publicationMEMS 2014 - 27th IEEE International Conference on Micro Electro Mechanical Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages147-150
Number of pages4
ISBN (Print)9781479935086
DOIs
Publication statusPublished - Jan 1 2014
Event27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014 - San Francisco, CA, United States
Duration: Jan 26 2014Jan 30 2014

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014
CountryUnited States
CitySan Francisco, CA
Period1/26/141/30/14

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Near infrared photo-detector using self-assembled formation of organic crystalline nanopillar arrays'. Together they form a unique fingerprint.

  • Cite this

    Ajiki, Y., Kan, T., Yahiro, M., Hamada, A., Adachi, J., Adachi, C., Matsumoto, K., & Shimoyama, I. (2014). Near infrared photo-detector using self-assembled formation of organic crystalline nanopillar arrays. In MEMS 2014 - 27th IEEE International Conference on Micro Electro Mechanical Systems (pp. 147-150). [6765595] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MEMSYS.2014.6765595