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

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

doi:10.1021/am504090e

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

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

John and Willie Leone Department of Energy & Mineral Engineering (EME)

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

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 language	English (US)
Pages (from-to)	14690-14694
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	16
DOIs	https://doi.org/10.1021/am504090e
State	Published - Aug 27 2014

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1021/am504090e

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title = "High-performance ultraviolet photodetector based on organic-inorganic hybrid structure",

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.",

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T1 - High-performance ultraviolet photodetector based on organic-inorganic hybrid structure

AU - Shao, Dali

AU - Yu, Mingpeng

AU - Sun, Hongtao

AU - Xin, Guoqing

AU - Lian, Jie

AU - Sawyer, Shayla

PY - 2014/8/27

Y1 - 2014/8/27

N2 - 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.

AB - 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.

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

Abstract

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