Green solvent processed tetramethyl-substituted aluminum phthalocyanine thin films as anode buffer layers in organic light-emitting diodes. Issue 42 (18th October 2018)

• Record Type: Journal Article
• Authors: Zheng, Luping; Xu, Jiaju; Feng, Yaomiao; Shan, Haiquan; Fang, Guojia; Xu, Zong-Xiang
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 42(2018)
• Page Start: 11471
• Page End: 11478
• Publication Date: 2018-10-18
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8tc00960k
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Green solvent processable tetramethyl-substituted Al(iii ) phthalocyanines were employed as anodic buffer layers of OLEDs, achieving the enhanced OLED performance and durability compared with those of OLEDs using PEDOT:PSS. Abstract : This study presents the use of a green solvent processed tetramethyl-substituted aluminum phthalocyanine (AlMePc ) thin film as an anode buffer layer in an organic light-emitting diode (OLED). The aim of the study was to probe the feasibility of green processing conditions for OLED fabrication. The hole-blocking properties of theAlMePc layer were determined to achieve devices with more balanced charge injection and transport processes. We achieved a significantly enhanced luminance of 11 790 cd m −2, which is twice that of a comparable diode without this anode buffer layer. Additionally, a higher luminous efficiency and power efficiency were obtained for theAlMePc -based OLED than those for a PEDOT:PSS-based diode. Furthermore, the improved charge balance in the OLED achieved by using theAlMePc layer along with its non-aqueous, organic processing methods yielded a maximum half-lifetime of 1860 min at a driving current density of 100 mA cm −2 .