• 한국진공학회지
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• 제17권5호
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• pp.435-441
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• 2008

본 논문은 TIPS Pentacene을 유기반도체로 사용한 유기박막 트랜지스터의 용제에 따른 전기적 특성에 대한 연구로서, 용제로는 chlorobenzene, p-xylene, chloroform, toluene을 사용하였으며, 회전 도포 방법을 사용하여 TIPS pentacene을 혼합하여 적층하였다. chlorobenzene을 사용하여 만들어진 유기박막 트랜지스터는 $1.0{\times}10^{-2}cm^2/V{\cdot}s$의 전계효과 이동도, $4.3{\times}10^3$의 on/off 비율, 5.5 V의 문턱전압의 특성을 보였다. 반대로, chloroform을 사용하여 만들어진 유기박막 트랜지스터는 $5.8{\times}10^{-7}cm^2/V{\cdot}s$의 전계효과 이동도, $1.1{\times}10^2$의 on/off 비율, 1.7 V의 문턱전압의 특성을 보였다. 또한 각 용제에 따른 TIPS pentacene 결정크기를 AFM을 통하여 측정하였다. 이와 같은 결과들을 통하여, 더 높은 끊는점을 가진 용제는 TIPS Pentacene의 더 큰 결정 크기와 높은 결정화 성향으로 인하여 더 좋은 전기적 특성을 가지는 것을 확인할 수 있었으며, 본 실험에서는 끓는점이 가장 높은 chlorobenzene을 사용한 TIPS Pentacene 유기박막 트랜지스터가 가장 좋은 전기적 특성을 나타내는 것을 확인하였다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1150-1153
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• 2006

In this paper, we investigated the effect of solvent on electrical properties of triisopropylsilyl (TIPS) pentacene organic thin-film transistors (OTFTs). The TIPS pentacene was spin coated by using chlorobenzene, p-xylene, chloroform and toluene as solvent. Fabricated OTFT with chlorobenzene showed field-effect mobility of $0.01\;cm^2/V{\cdot}s$, on/off ratio $4.3{\times}10^3$ and threshold voltage of 5.5 V. In contrast, with chloroform the mobility was $5.8{\times}10^{-7}\;cm^2/Vs$, on/off ratio $1.1{\times}10^2$ and threshold voltage of 1.7 V.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1288-1291
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• 2007

We investigated the effect of Cr thickness on the electrical properties of triisopropylsilyl pentacene organic thin-film transistor (OTFT) employing suspended source-drain electrode. With Cr thickness of 10 nm, the field-effect mobility, on/off ratio and subthreshold slope were $0.017\;cm^2/Vs$, $8.78\;{\times}\;10^3$ and 10 V/decade, respectively. By increasing the Cr thickness to 100 nm, the fieldeffect mobility was increased to $0.032\;cm^2/Vs$, on/off ratio to $1.12{\times}10^5$ and subthreshold slope to 1 V/decade.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1135-1138
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• 2006

By ink-jet printing method, organic thin-film transistors (OTFTs) having soluble 6,13-bis (triisopropylsilylethynyl) pentacene (TIPS pentacene) as an active material were fabricated. The TIPS pentacene solution was made with chlorobenzene and anisole. The solutions were printed on poly (4-vinylphenol) (PVP) dielectric layers and source/drain electrodes by piezo-type heads for bottom contact OTFTs. The dielectric layers had untreated or HMDS-treated conditions. The chlorobenzene device showed the highest field effect mobility of $0.016\;cm^2/Vs$ and the anisole HMDS-treated device shows the highest $I_{on}/I_{off}$ ratio of $10^5$.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1274-1274
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• 2008

In this report, the effect of substrate temperature on the electrical properties of ink-jet printed triisopropylsilyl (TIPS) pentacene organic thin-film transistors (OTFTs) has been investigated. The electrical properties such as mobility and on/off ratio were decreased as the substrate was heated above room temperature. The field-effect mobility of decreased from $10^{-2}cm^2/Vs$ to $10^{-5}cm^2/Vs$ and the on/off ratio decreased from $10^6$ to $10^4$ when the substrate temperature was heated from room temperature to 60$^{\circ}C$.