Novel Organic Semiconductors Based on 1, 5‐Naphthyridine‐2, 6‐Dione Unit for Blue‐Selective Organic Phototransistor. Issue 20 (26th July 2020)

• Record Type: Journal Article
• Authors: Kim, Jin Hong; Choi, Min‐Woo; Kim, Su‐Yeon; Jung, Seyoung; Choi, Yeong Suk; Park, Soo Young
• Is Part Of: Advanced optical materials. Volume 8:Issue 20(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-26
• Subjects: 1, 5‐naphthyridine‐2, 6‐dione -- blue‐absorbing molecules, blue‐selective phototransistors -- C60 layers -- organic phototransistors; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202000695
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Novel bis‐lactam based narrowband blue light absorbing organic p‐type semiconducting molecules including 3, 7‐di(naphthalen‐1‐yl)‐1, 5‐dioctyl‐1, 5‐naphthyridine‐2, 6‐dione (C8‐NTDN1) are synthesized and their phototransistor properties are investigated. Based on the excellent optical (absorption peak at 446 nm with full width at half‐maximum value of 70.7 nm) and electrical properties (field effect hole mobility of up to 0.38 cm 2 V −1 s −1 ), C8‐NTDN1 phototransistor shows decent photoresponsivity of up to 3.6 × 10 2 A W −1, which can be further improved to 2.1 × 10 3 A W −1 by overlaying discontinuous C60 layer on top of C8‐NTDN1 thin‐film. Abstract : Narrowband blue‐absorbing 1, 5‐naphthyridine‐2, 6‐dione (NTD) based organic semiconductors are reported. C8‐NTDN1 and C8‐NTDN2 thin‐films exhibit absorption peak at 446 nm and 483 nm, respectively, with full‐width at half‐maximum of below 100 nm. C8‐NTDN1 phototransistor exhibits responsivity of up to 3.6 × 10 2 A W −1 under blue light irradiation, which is further improved to 2.1 × 10 3 A W −1 by overlying discontinuous C60 layer.