High-performance ultraviolet photodetector based on organic-inorganic hybrid structure

Dali Shao, Mingpeng Yu, Hongtao Sun, Guoqing Xin, Jie Lian, Shayla Sawyer

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

An ultraviolet (UV) photodetector is fabricated by sandwiching a nanocomposite active layer between charge-selective semiconducting polymers. The nanocomposite active layer composed of TiO2 nanoparticles (NPs) blended with 1,3-bis(N-carbazolyl)benzene (mCP), which acts as a "valve" controller that enables hole injection into the device upon UV illumination. The UV photodetector demonstrated a high photocurrent to dark current ratio (∼104), a large linear dynamic range of 60 dB, and a remarkable external quantum efficiency (∼8.5 × 104%) for the UV light at 351 nm. In addition to discussing the performance of the UV photodetector, a general strategy for design and fabrication of high-performance UV photodetectors with hole injection operation mode is suggested.

Original languageEnglish (US)
Pages (from-to)14690-14694
Number of pages5
JournalACS Applied Materials and Interfaces
Volume6
Issue number16
DOIs
StatePublished - Jan 1 2014

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Photodetectors
Ultraviolet devices
Nanocomposites
Semiconducting polymers
Dark currents
Benzene
Photocurrents
Quantum efficiency
Lighting
Nanoparticles
Fabrication
Controllers

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Shao, Dali ; Yu, Mingpeng ; Sun, Hongtao ; Xin, Guoqing ; Lian, Jie ; Sawyer, Shayla. / High-performance ultraviolet photodetector based on organic-inorganic hybrid structure. In: ACS Applied Materials and Interfaces. 2014 ; Vol. 6, No. 16. pp. 14690-14694.
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High-performance ultraviolet photodetector based on organic-inorganic hybrid structure. / Shao, Dali; Yu, Mingpeng; Sun, Hongtao; Xin, Guoqing; Lian, Jie; Sawyer, Shayla.

In: ACS Applied Materials and Interfaces, Vol. 6, No. 16, 01.01.2014, p. 14690-14694.

Research output: Contribution to journalArticle

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