Thin film transistors with ink-jet printed amorphous oxide semiconductors

Dongjo Kim, Youngmin Jeong, Chang Young Koo, Keunkyu Song, Joohoj Moon

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We investigated the influence of the thickness of printed Ga-In-Zn-O (GIZO) channel on transistor performance. Semiconductor layers were inkjet printed using sol-gel derived GIZO solution and the thickness of the resulting active layers varied depending on the pre-heated substrate temperature. We found that GIZO film thickness significantly influences device performance. Thin film transistors (TFTs) with thicker active layers showed higher on-current/off- current mobility and a threshold voltage shift in the negative direction. The dependence of the electric characteristics on thickness resulted from the increased intrinsic free charge carriers as the active layer thickness increased. Ink-jet printing conditions need to be carefully controlled to maximize device performance.

Original languageEnglish
Pages (from-to)05EB061-05EB064
JournalJapanese journal of applied physics
Volume49
Issue number5 PART 2
DOIs
Publication statusPublished - 2010 May 1

Fingerprint

Ink jet printing
Amorphous semiconductors
inks
Thin film transistors
Charge carriers
Threshold voltage
Ink
Sol-gels
Film thickness
Transistors
transistors
Semiconductor materials
oxides
Substrates
thin films
Temperature
printing
threshold voltage
charge carriers
film thickness

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Kim, Dongjo ; Jeong, Youngmin ; Koo, Chang Young ; Song, Keunkyu ; Moon, Joohoj. / Thin film transistors with ink-jet printed amorphous oxide semiconductors. In: Japanese journal of applied physics. 2010 ; Vol. 49, No. 5 PART 2. pp. 05EB061-05EB064.
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Thin film transistors with ink-jet printed amorphous oxide semiconductors. / Kim, Dongjo; Jeong, Youngmin; Koo, Chang Young; Song, Keunkyu; Moon, Joohoj.

In: Japanese journal of applied physics, Vol. 49, No. 5 PART 2, 01.05.2010, p. 05EB061-05EB064.

Research output: Contribution to journalArticle

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