Organic thin film phototransistors: Materials and mechanism

Yong Young Noh; Dong Yu Kim; Yuji Yoshida; Kiyoshi Yase; Byung Jun Jung; Eunhee Lim; Hong Ku Shim

doi:10.1117/12.592435

Organic thin film phototransistors: Materials and mechanism

Yong Young Noh
, Dong Yu Kim
, Yuji Yoshida
, Kiyoshi Yase
, Byung Jun Jung
, Eunhee Lim
, Hong Ku Shim

Gwangju Institute of Science and Technology
National Institute of Advanced Industrial Science and Technology
Korea Advanced Institute of Science and Technology

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

Highly photosensitive organic phototransistors (OPTs) with an organic thin film transistors configuration based on a biphenyl end capped fused bithiophene oligomer (BPTT) and copper phthalocyanine (CuPC) were prepared. The measured maximum responsivity and the ratio of photocurrent to dark current (I _Ph/I_Dark) in BPTT and CuPC OPTs were 82 A/W, 2 A/W and 2.0 × 10⁵, 1000 under 365 nm UV light with 1.55 mW/cm², respectively. The prepared OPTs showed a photocurrent response similar to the photo to current conversion efficiency (IPCE) spectrum of BPTT and CuPC. The main mechanisms responsible for photocurrent amplification in the devices were examined by comparing theoretical and measured data. The photovoltaic (turn-on) and photoconductive effect (turn-off) of the OPTs were determined by fitting to theoretical equations. The findings confirmed that the operation of the OPTs followed as photovoltaic (turn-on state) and photo-conductive (turn-off state) behaviors.

Original language	English
Article number	25
Pages (from-to)	172-182
Number of pages	11
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5724
DOIs	https://doi.org/10.1117/12.592435
State	Published - 2005
Event	Organic Photonic Materials and Devices VII - San Jose, CA, United States Duration: 24 Jan 2005 → 26 Jan 2005

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Organic photodiodes
Organic phototransistors
Organic thin film transistors

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10.1117/12.592435

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title = "Organic thin film phototransistors: Materials and mechanism",

abstract = "Highly photosensitive organic phototransistors (OPTs) with an organic thin film transistors configuration based on a biphenyl end capped fused bithiophene oligomer (BPTT) and copper phthalocyanine (CuPC) were prepared. The measured maximum responsivity and the ratio of photocurrent to dark current (I Ph/IDark) in BPTT and CuPC OPTs were 82 A/W, 2 A/W and 2.0 {\texttimes} 105, 1000 under 365 nm UV light with 1.55 mW/cm2, respectively. The prepared OPTs showed a photocurrent response similar to the photo to current conversion efficiency (IPCE) spectrum of BPTT and CuPC. The main mechanisms responsible for photocurrent amplification in the devices were examined by comparing theoretical and measured data. The photovoltaic (turn-on) and photoconductive effect (turn-off) of the OPTs were determined by fitting to theoretical equations. The findings confirmed that the operation of the OPTs followed as photovoltaic (turn-on state) and photo-conductive (turn-off state) behaviors.",

keywords = "Organic photodiodes, Organic phototransistors, Organic thin film transistors",

author = "Noh, \{Yong Young\} and Kim, \{Dong Yu\} and Yuji Yoshida and Kiyoshi Yase and Jung, \{Byung Jun\} and Eunhee Lim and Shim, \{Hong Ku\}",

year = "2005",

doi = "10.1117/12.592435",

language = "English",

volume = "5724",

pages = "172--182",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Organic Photonic Materials and Devices VII ; Conference date: 24-01-2005 Through 26-01-2005",

}

TY - JOUR

T1 - Organic thin film phototransistors

T2 - Organic Photonic Materials and Devices VII

AU - Noh, Yong Young

AU - Kim, Dong Yu

AU - Yoshida, Yuji

AU - Yase, Kiyoshi

AU - Jung, Byung Jun

AU - Lim, Eunhee

AU - Shim, Hong Ku

PY - 2005

Y1 - 2005

N2 - Highly photosensitive organic phototransistors (OPTs) with an organic thin film transistors configuration based on a biphenyl end capped fused bithiophene oligomer (BPTT) and copper phthalocyanine (CuPC) were prepared. The measured maximum responsivity and the ratio of photocurrent to dark current (I Ph/IDark) in BPTT and CuPC OPTs were 82 A/W, 2 A/W and 2.0 × 105, 1000 under 365 nm UV light with 1.55 mW/cm2, respectively. The prepared OPTs showed a photocurrent response similar to the photo to current conversion efficiency (IPCE) spectrum of BPTT and CuPC. The main mechanisms responsible for photocurrent amplification in the devices were examined by comparing theoretical and measured data. The photovoltaic (turn-on) and photoconductive effect (turn-off) of the OPTs were determined by fitting to theoretical equations. The findings confirmed that the operation of the OPTs followed as photovoltaic (turn-on state) and photo-conductive (turn-off state) behaviors.

AB - Highly photosensitive organic phototransistors (OPTs) with an organic thin film transistors configuration based on a biphenyl end capped fused bithiophene oligomer (BPTT) and copper phthalocyanine (CuPC) were prepared. The measured maximum responsivity and the ratio of photocurrent to dark current (I Ph/IDark) in BPTT and CuPC OPTs were 82 A/W, 2 A/W and 2.0 × 105, 1000 under 365 nm UV light with 1.55 mW/cm2, respectively. The prepared OPTs showed a photocurrent response similar to the photo to current conversion efficiency (IPCE) spectrum of BPTT and CuPC. The main mechanisms responsible for photocurrent amplification in the devices were examined by comparing theoretical and measured data. The photovoltaic (turn-on) and photoconductive effect (turn-off) of the OPTs were determined by fitting to theoretical equations. The findings confirmed that the operation of the OPTs followed as photovoltaic (turn-on state) and photo-conductive (turn-off state) behaviors.

KW - Organic photodiodes

KW - Organic phototransistors

KW - Organic thin film transistors

UR - https://www.scopus.com/pages/publications/21844473507

U2 - 10.1117/12.592435

DO - 10.1117/12.592435

M3 - Conference article

AN - SCOPUS:21844473507

SN - 0277-786X

VL - 5724

SP - 172

EP - 182

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 25

Y2 - 24 January 2005 through 26 January 2005

ER -

Organic thin film phototransistors: Materials and mechanism

Abstract

UN SDGs

Keywords

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