Development of flexible displays using back‐channel‐etched In–Sn–Zn–O thin‐film transistors and air‐stable inverted organic light‐emitting diodes. Issue 1 (15th January 2016)

• Record Type: Journal Article
• Authors: Nakata, Mitsuru; Motomura, Genichi; Nakajima, Yoshiki; Takei, Tatsuya; Tsuji, Hiroshi; Fukagawa, Hirohiko; Shimizu, Takahisa; Tsuzuki, Toshimitsu; Fujisaki, Yoshihide; Yamamoto, Toshihiro
• Is Part Of: Journal of the Society for Information Display. Volume 24:Issue 1(2016)
• Page Start: 3
• Page End: 11
• Publication Date: 2016-01-15
• Subjects: flexible display -- oxide semiconductor -- back‐channel‐etched TFT -- ITZO -- solution‐processed passivation layer -- inverted OLED; Information display systems -- Periodicals; 621.38154205
• DOI: 10.1002/jsid.408
• Languages: English
• ISSNs: 1071-0922

Abstract

Abstract: We developed flexible displays using back‐channel‐etched In–Sn–Zn–O (ITZO) thin‐film transistors (TFTs) and air‐stable inverted organic light‐emitting diodes (iOLEDs). The TFTs fabricated on a polyimide film exhibited high mobility (32.9 cm 2 /Vs) and stability by utilization of a solution‐processed organic passivation layer. ITZO was also used as an electron injection layer (EIL) in the iOLEDs instead of conventional air‐sensitive materials. The iOLED with ITZO as an EIL exhibited higher efficiency and a lower driving voltage than that of conventional iOLEDs. Our approach of the simultaneous formation of ITZO film as both of a channel layer in TFTs and of an EIL in iOLEDs offers simple fabrication process. Abstract : We developed flexible displays using back‐channel‐etched In‐Sn‐Zn‐O (ITZO) thin‐film transistors (TFTs) and air‐stable inverted organic light‐emitting diodes (iOLEDs). The TFTs fabricated on a polyimide film exhibited high mobility (32.9 cm2 /Vs) and stability. ITZO was also used as an electron injection layer (EIL) in the iOLEDs instead of conventional air‐sensitive materials. Our approach of the simultaneous formation of ITZO film as both of a channel layer in TFTs and of an EIL in iOLEDs offers simple fabrication process.