Organic inverter using two transistors with different channel thicknesses

Sung jin Mun; Kimoon Lee; Kwang H. Lee; Min Suk Oh; Seongil Im

doi:10.1016/j.orgel.2009.09.024

Organic inverter using two transistors with different channel thicknesses

Sung jin Mun, Kimoon Lee, Kwang H. Lee, Min Suk Oh, Seongil Im

Department of Physics

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

12 Citations (Scopus)

Abstract

We report on p-channel depletion mode organic inverter composed of two pentacene thin-film transistors (TFTs), which have different channel thickness each other. Adopting thin hydrophilic AlO_x as dielectric, the 25 nm-thin channel pentacene TFT showed lower threshold voltage (V_TH) than that of 50 nm-thick channel-TFT, while on hydrophobic poly-4-vinyphenol (PVP) dielectric the results became opposite. We utilized the different V_TH caused by different channel thickness to operate the inverter that consists of driver- and load-TFTs. The 50 nm-thick pentacene operated as the channel layer of driver-TFT on AlO_x, but on PVP dielectric the 25 nm-thin pentacene layer played as the driver channel. Maximum voltage gain of ∼22 under -8 V supply voltage was achieved when the dielectric layer was optimized.

Original language	English
Pages (from-to)	169-174
Number of pages	6
Journal	Organic Electronics
Volume	11
Issue number	1
DOIs	https://doi.org/10.1016/j.orgel.2009.09.024
Publication status	Published - 2010 Jan

Bibliographical note

Funding Information:
Authors acknowledge the financial support from KOSEF (NRL program: Grant No. 2009-8-0403), from MKE (the fundamental R&D Program for Core Technology of Materials: No. 2008-8-1410, the IT R&D Program for Smart window with transparent electronic devices: No. 2008-8-0613), Information Display R&D center, one of the 21st Century Frontier R&D Program: No. F0004022-2009], and Brain Korea 21 program.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Chemistry(all)
Biomaterials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.orgel.2009.09.024

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title = "Organic inverter using two transistors with different channel thicknesses",

abstract = "We report on p-channel depletion mode organic inverter composed of two pentacene thin-film transistors (TFTs), which have different channel thickness each other. Adopting thin hydrophilic AlOx as dielectric, the 25 nm-thin channel pentacene TFT showed lower threshold voltage (VTH) than that of 50 nm-thick channel-TFT, while on hydrophobic poly-4-vinyphenol (PVP) dielectric the results became opposite. We utilized the different VTH caused by different channel thickness to operate the inverter that consists of driver- and load-TFTs. The 50 nm-thick pentacene operated as the channel layer of driver-TFT on AlOx, but on PVP dielectric the 25 nm-thin pentacene layer played as the driver channel. Maximum voltage gain of ∼22 under -8 V supply voltage was achieved when the dielectric layer was optimized.",

author = "Mun, {Sung jin} and Kimoon Lee and Lee, {Kwang H.} and Oh, {Min Suk} and Seongil Im",

note = "Funding Information: Authors acknowledge the financial support from KOSEF (NRL program: Grant No. 2009-8-0403), from MKE (the fundamental R&D Program for Core Technology of Materials: No. 2008-8-1410, the IT R&D Program for Smart window with transparent electronic devices: No. 2008-8-0613), Information Display R&D center, one of the 21st Century Frontier R&D Program: No. F0004022-2009], and Brain Korea 21 program.",

year = "2010",

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doi = "10.1016/j.orgel.2009.09.024",

language = "English",

volume = "11",

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AU - Mun, Sung jin

AU - Lee, Kimoon

AU - Lee, Kwang H.

AU - Oh, Min Suk

AU - Im, Seongil

N1 - Funding Information: Authors acknowledge the financial support from KOSEF (NRL program: Grant No. 2009-8-0403), from MKE (the fundamental R&D Program for Core Technology of Materials: No. 2008-8-1410, the IT R&D Program for Smart window with transparent electronic devices: No. 2008-8-0613), Information Display R&D center, one of the 21st Century Frontier R&D Program: No. F0004022-2009], and Brain Korea 21 program.

PY - 2010/1

Y1 - 2010/1

N2 - We report on p-channel depletion mode organic inverter composed of two pentacene thin-film transistors (TFTs), which have different channel thickness each other. Adopting thin hydrophilic AlOx as dielectric, the 25 nm-thin channel pentacene TFT showed lower threshold voltage (VTH) than that of 50 nm-thick channel-TFT, while on hydrophobic poly-4-vinyphenol (PVP) dielectric the results became opposite. We utilized the different VTH caused by different channel thickness to operate the inverter that consists of driver- and load-TFTs. The 50 nm-thick pentacene operated as the channel layer of driver-TFT on AlOx, but on PVP dielectric the 25 nm-thin pentacene layer played as the driver channel. Maximum voltage gain of ∼22 under -8 V supply voltage was achieved when the dielectric layer was optimized.

AB - We report on p-channel depletion mode organic inverter composed of two pentacene thin-film transistors (TFTs), which have different channel thickness each other. Adopting thin hydrophilic AlOx as dielectric, the 25 nm-thin channel pentacene TFT showed lower threshold voltage (VTH) than that of 50 nm-thick channel-TFT, while on hydrophobic poly-4-vinyphenol (PVP) dielectric the results became opposite. We utilized the different VTH caused by different channel thickness to operate the inverter that consists of driver- and load-TFTs. The 50 nm-thick pentacene operated as the channel layer of driver-TFT on AlOx, but on PVP dielectric the 25 nm-thin pentacene layer played as the driver channel. Maximum voltage gain of ∼22 under -8 V supply voltage was achieved when the dielectric layer was optimized.

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Organic inverter using two transistors with different channel thicknesses

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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