A new dithieno[3,2-b:2′,3′-d]thiophene derivative for high performance single crystal organic field-effect transistors and UV-sensitive phototransistors

Yunpeng Lou; Rui Shi; Li Yu; Ting Jiang; Haoquan Zhang; Lifeng Zhang; Yongxu Hu; Deyang Ji; Yajing Sun; Jie Li; Liqiang Li; Wenping Hu

doi:10.1039/D3RA00600J

A new dithieno[3,2-b:2′,3′-d]thiophene derivative for high performance single crystal organic field-effect transistors and UV-sensitive phototransistors†

Yunpeng Lou,^a Rui Shi,^a Li Yu,^a Ting Jiang,^a Haoquan Zhang,^a Lifeng Zhang,^d Yongxu Hu,^a Deyang Ji,

^a Yajing Sun,*^b Jie Li,

*^a Liqiang Li

^ac and Wenping Hu^bc

Author affiliations

* Corresponding authors

^a Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China
E-mail: syg19@tju.edu.cn, lijie2018@tju.edu.cn

^b Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China

^c Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China

^d Institute of Molecular Plus, Tianjin University, Tianjin 300072, China

Abstract

Organic phototransistors (OPTs), as the basic unit for organic image sensors, are emerging as one of the most promising light signal detectors. High performance UV-sensitive phototransistors are highly desired for the detection of UV light. Herein, by introducing the anthracene group to the 2,6-positions of dithieno[3,2-b:2′,3′-d]thiophene, we designed and synthesized a new dithieno[3,2-b:2′,3′-d]thiophene derivative, 2,6-di(anthracen-2-yl)dithieno[3,2-b:2′,3′-d]thiophene (2,6-DADTT). The single crystal structure of 2,6-DADTT presents classical herringbone packing with multiple intermolecular interactions, including S⋯S (3.470 Å), S⋯C (3.304 Å, 3.391 Å, 3.394 Å) and C–H⋯π (2.763 Å, 2.822 Å, 2.846 Å, 2.865 Å, 2.885 Å, 2.890 Å) contacts. Single crystal organic field-effect transistors (SC-OFETs) based on 2,6-DADTT reach a highest mobility of 1.26 cm² V⁻¹ s⁻¹ and an average mobility of 0.706 cm² V⁻¹ s⁻¹. 2,6-DADTT-based single crystal organic phototransistors (OPTs) demonstrate photosensitivity (P) of 2.49 × 10⁶, photoresponsivity (R) of 6.84 × 10³ A W⁻¹ and ultrahigh detectivity (D*) of 4.70 × 10¹⁶ Jones to UV light, which are among the best figures of merit for UV-sensitive OPTs. These excellent comprehensive performances indicate its good application prospects in integrated optoelectronics.

RSC Advances

A new dithieno[3,2-b:2′,3′-d]thiophene derivative for high performance single crystal organic field-effect transistors and UV-sensitive phototransistors†

Abstract

Supplementary files

Article information

Download Citation

Permissions

A new dithieno[3,2-b:2′,3′-d]thiophene derivative for high performance single crystal organic field-effect transistors and UV-sensitive phototransistors

Social activity

Search articles by author

Spotlight

Advertisements