• Title/Summary/Keyword: 유기 MIM-소자

Search Result 16, Processing Time 0.024 seconds

Effect of substrate bias on the properties of plasma polymerized polymer thin films (기판 바이어스가 플라즈마 중합 고분자 박막에 미치는 영향)

  • Lim, Y.T.;Lim, J.S.;Shin, P.K.;Lee, S.W.;Lim, K.B.;Yoo, D.H.;Lee, N.H.
    • Proceedings of the KIEE Conference
    • /
    • 2011.07a
    • /
    • pp.1475-1476
    • /
    • 2011
  • 플라즈마 중합 기법에 의해 제작된 고분자 (plasma polymerized polymer) 박막은 단량체(monomer)의 고유의 특성을 유지하며 고분자 박막이 형성됨을 확인하고, 기판 바이어스에 의해 시간에 따른 증착 두께는 선형적으로 증가함을 확인하였다. 자체 제작된 플라즈마 중합 시스템에서 self-bias voltage를 최소화하여 플라즈마 고분자의 증착효율 및 두께 조절이 가능함을 확인하였다. 플라즈마 합성을 이용해 고분자 박막을 제조하고, MIM 소자를 제작하여 통상적인 고분자 합성기법으로 제조된 고분자 대비 높은 유전상수 값이 확인되었다. 결과적으로 유기박막 트랜지스터 및 유기 메모리 등 플렉서블 유기전자소자용 절연/유전체 박막으로의 응용이 기대된다.

  • PDF

Organic Thin Film Transistors with Cross-Linked PVP Gates (Cross-Linked PVP 게이트 유기 박막트랜지스터)

  • Jang Ji-Geun;Oh Myung-Hwan;Chang Ho-Jung;Kim Young-Seop;Lee Jun-Young;Gong Myoung-Seon;Lee Young-Kwan
    • Journal of the Microelectronics and Packaging Society
    • /
    • v.13 no.1 s.38
    • /
    • pp.37-42
    • /
    • 2006
  • The preparation and processing of PVP-gate insulators on the device performance have been studied in the fabrication of organic thin film transistors (OTFTs). One of polyvinyl series, poly-4-vinyl phenol(PVP) was used as a solute and propyleneglycol monomethyl etheracetate(PGMEA) as a solvent in the formation of organic gate solutions. The cross-linking of organic insulators was also attempted by adding the thermosetting material, poly (melamine-co-formaldehyde) as a hardener in the compounds. From the measurements of electrical insulating characteristics of metal-insulator-metal (MIM) samples, PVP-based insulating layers showed lower leakage current according to the increase of concentration of PVP and poly (melamine-co-formaldehyde) to PGMEA in the formation of organic solutions. The PVP(20 wt%) copolymer with composition of 20 wt% PVP to PGMEA and cross-linked PVPs in which 5 wt% and 10 wt% poly (melamine-co-formaldehyde) hardeners had been additional]y mixed into PVP(20 wt%) copolymers were used as gate dielectrics in the fabrication of OTFTs, respectively. In our experiments, the maximum field effect mobility of $0.31cm^2/Vs$ could be obtained in the 5 wt% cross-linked PVP(20 wt%) device and the highest on/off current ratio of $1.92{\times}10^5$ in the 10 wt% cross-linked PVP(20 wt%) device.

  • PDF

Fabrication of Organic TFT wi th PVP Gate Insulating layer (PVP 게이트 절연막을 이용한 유기박막트랜지스터 제작)

  • Jang Ji-Geun;Seo Dong-Gyoon;Lim Yong-Gyu;Chang Ho-Jung;Oh Myung-Hwan
    • Proceedings of the Korean Society Of Semiconductor Equipment Technology
    • /
    • 2005.09a
    • /
    • pp.83-88
    • /
    • 2005
  • 유기 절연층을 갖는 유기 박막트랜지스터 (organic TFT)를 제작하여 소자 성능을 조사하였다. 유기 절연층의 형성에서는 polyvinyl 계열의 PVP(poly-4-vinylphenol)와 PVT(polyvinyltoluene)를 용질로, PGMEA (propylene glycol mononethyl ether acetate)를 용매로 사용하였다. 또한, 열경화성 수지인 poly(melamine-co-formaldehyde)를 경화제로 사용하여 유기 절연층의 cross-link 를 시도하였다. MIM 구조로 유기 절연층의 특정을 측정한 결과, PVT는 PVP에 비해 절연 특성이 떨어지는 경향을 보였다. 게이트 절연막의 제작에서 PVP를 cobpolymer 방식과 cross-linked 방식으로 실험 해 본 결과, cross-link 방식에서 낮은 누설전류 특성을 나타내었다. OTFT 제작에서는 PVP를 용질로, poly(melanine-co-formaldehyde)를 경화제로 사용한 cross-linked PVP 를 게이트 절연막으로 이용하였다. PVP copolymer($20\;wt\%$)에 $10\;wt\%$ poly(melamine- co-formaldehyde)를 혼합한 cross-linked PVP 를 게이트 절연막으로 사용하여 top contact 구조의 OTFT를 제작한 결과 약 $0.23\;cm^2/Vs$의 정공 이동도와 약 $0.4{\times}10^4$의 평균 전류점멸비를 나타내었다.

  • PDF

Electrical Properties of Organic Thin Film for Power Device (전력 소자용 유기박막의 전기적 특성)

  • Song, Jin-Won;Choi, Yong-Sung;Moon, Jong-Dae;Lee, Kyung-Sup
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2006.05a
    • /
    • pp.20-22
    • /
    • 2006
  • Monolayers of lipids on a water surface have attracted much interest as models of biological membranes, but also as precursors of multilayer systems promising many technical applications. Until now, many methodologies have been developed in order to gain a better understanding of the relationship between the structure and function of the monolayers. Maxwell displacement current (MDC) measurement has been employed to study the dielectric property of Langmuir-films. MDC flowing across monolayers is analyzed using a rod-like molecular model. A linear relationship between the monolayer compression speed and the molecular area Am. Compression speed was about 30, 40, 50mm/min. Langmuir-Blodgett(LB)layers of Arachidic acid deposited by LB method were deposited onto slide glass as Y-type film. The structure of manufactured device is Au/Arachidic acid/Al, the number of accumulated layers are 9~21. Also, we then examined of the Metal-Insulator-Metal(MIM) device by means of I-V. The I-V characteristics of the device are measured from -3 to +3[V]. The insulation property of a thin film is better as the distance between electrodes is larger.

  • PDF

A Study on the Electrical Properties of Organic Ultra Thin Films for Nanoscale Device Manufacture (나노스케일 소자제작을 위한 유기초박막의 전기적특성에 관한 연구)

  • Song, Jin-Won;Han, Chang-Su;Lee, Kyung-Sup
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2005.07a
    • /
    • pp.384-385
    • /
    • 2005
  • Monolayers of lipids on a water surface have attracted much interest as models of biological membranes, but also as precursors of multilayer systems promising many technical applications. Until now, many methodologies have been developed in order to gain a better understanding of the relationship between the structure and function of the monolayers. Maxwell displacement current (MDC) measurement has been employed to study the dielectric property of Langmuir-films. MDC flowing across monolayers is analyzed using a rod-like molecular model. It is revealed that the dielectric relaxation time $\tau$ of mono layers in the isotropic polar orientational phase is determined using a liner relationship between the monolayer compression speed a and the molecular area $A_m$. Compression speed a was about 30, 40, 50mm/min. also, LB layers of Arachidic acid deposited by LB method were deposited onto slide glass as Y-type film. The structure of manufactured device is Au/Arachidic acid/Al, the number of accumulated layers are 9 ~ 21 and we then examined of the Metal-Insulator-Metal(MIM) device by means of I-V.

  • PDF

Fabrication of Organic Thin Film by Using Self-Assembly and Negative Difference Resistance Research (자기조립법을 이용한 유기박막의 소자 제작과 부성저항특성 연구)

  • Son, Jung-Ho;Shin, Hoon-Kyu;Kwon, Young-Soo
    • Proceedings of the KIEE Conference
    • /
    • 2002.07c
    • /
    • pp.1572-1574
    • /
    • 2002
  • In this paper, we discuss the electrical properties of self-assembled (2'-amino-4,4-di(ethynylp henyl)-5'-nitro-1-(thioacetyl)benzene), which has been well known as a conducting molecule having possible application to molecular level NDR device. The phenomenon of negative differential resi(NDR) is characterized by decreasing current th a junction at increasing voltage, also fabricatio MIM-type molecular electronic device and the Molecular Level Using Scanning Tunneling Microscopy.

  • PDF