Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors

We utilized Ni as a floating capping layer in p-channel SnO thin-film transistors (TFTs) to improve their electrical performances. By utilizing the Ni as a floating capping layer, the p-channel SnO TFT showed enhanced mobility as high as 10.5 cm<sup>2</sup>·V<sup>−1</sup>·s&l...

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Main Authors: Min-Gyu Shin, Kang-Hwan Bae, Hyun-Seok Cha, Hwan-Seok Jeong, Dae-Hwan Kim, Hyuck-In Kwon
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/13/14/3055
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author Min-Gyu Shin
Kang-Hwan Bae
Hyun-Seok Cha
Hwan-Seok Jeong
Dae-Hwan Kim
Hyuck-In Kwon
author_facet Min-Gyu Shin
Kang-Hwan Bae
Hyun-Seok Cha
Hwan-Seok Jeong
Dae-Hwan Kim
Hyuck-In Kwon
author_sort Min-Gyu Shin
collection DOAJ
description We utilized Ni as a floating capping layer in p-channel SnO thin-film transistors (TFTs) to improve their electrical performances. By utilizing the Ni as a floating capping layer, the p-channel SnO TFT showed enhanced mobility as high as 10.5 cm<sup>2</sup>·V<sup>−1</sup>·s<sup>−1</sup>. The increase in mobility was more significant as the length of Ni capping layer increased and the thickness of SnO active layer decreased. The observed phenomenon was possibly attributed to the changed vertical electric field distribution and increased hole concentration in the SnO channel by the floating Ni capping layer. Our experimental results demonstrate that incorporating the floating Ni capping layer on the channel layer is an effective method for increasing the field-effect mobility in p-channel SnO TFTs.
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spelling doaj.art-0492c3e031ca4bb19df7885270f7fc3c2023-11-20T06:12:14ZengMDPI AGMaterials1996-19442020-07-011314305510.3390/ma13143055Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film TransistorsMin-Gyu Shin0Kang-Hwan Bae1Hyun-Seok Cha2Hwan-Seok Jeong3Dae-Hwan Kim4Hyuck-In Kwon5School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, KoreaWe utilized Ni as a floating capping layer in p-channel SnO thin-film transistors (TFTs) to improve their electrical performances. By utilizing the Ni as a floating capping layer, the p-channel SnO TFT showed enhanced mobility as high as 10.5 cm<sup>2</sup>·V<sup>−1</sup>·s<sup>−1</sup>. The increase in mobility was more significant as the length of Ni capping layer increased and the thickness of SnO active layer decreased. The observed phenomenon was possibly attributed to the changed vertical electric field distribution and increased hole concentration in the SnO channel by the floating Ni capping layer. Our experimental results demonstrate that incorporating the floating Ni capping layer on the channel layer is an effective method for increasing the field-effect mobility in p-channel SnO TFTs.https://www.mdpi.com/1996-1944/13/14/3055p-channel SnOthin-film transistorfloating Ni capping layerhigh mobilitybulk channelpercolation conduction
spellingShingle Min-Gyu Shin
Kang-Hwan Bae
Hyun-Seok Cha
Hwan-Seok Jeong
Dae-Hwan Kim
Hyuck-In Kwon
Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
Materials
p-channel SnO
thin-film transistor
floating Ni capping layer
high mobility
bulk channel
percolation conduction
title Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
title_full Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
title_fullStr Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
title_full_unstemmed Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
title_short Floating Ni Capping for High-Mobility p-Channel SnO Thin-Film Transistors
title_sort floating ni capping for high mobility p channel sno thin film transistors
topic p-channel SnO
thin-film transistor
floating Ni capping layer
high mobility
bulk channel
percolation conduction
url https://www.mdpi.com/1996-1944/13/14/3055
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