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.

中文翻译：

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一种新型二噻吩并[3,2-b:2′,3′-d]噻吩衍生物，用于高性能单晶有机场效应晶体管和紫外敏感光电晶体管

有机光电晶体管（OPT）作为有机图像传感器的基本单元，正在成为最有前途的光信号探测器之一。紫外光检测非常需要高性能紫外敏感光电晶体管。在此，我们通过将蒽基引入二噻吩并[3,2- b :2',3'- d ]噻吩的2,6位，设计并合成了一种新的二噻吩并[3,2- b :2'， 3'- d ]噻吩衍生物，2,6-二(蒽-2-基)二噻吩并[3,2- b :2',3'- d ]噻吩(2,6-DADTT)。2,6-DADTT的单晶结构呈现经典的人字形堆积，具有多种分子间相互作用，包括S⋯S（3.470 Å）、S⋯C（3.304 Å、3.391 Å、3.394 Å）和C–H⋯π（2.763 Å） 、2.822 埃、2.846 埃、2.865 埃、2.885 埃、2.890 埃）触点。基于2,6-DADTT的单晶有机场效应晶体管(SC-OFET)达到1.26 cm ² V ^-1 s ^{-1的最高迁移率和0.706 cm 2} V ^-1 s ^-1的平均迁移率。基于2,6-DADTT的单晶有机光电晶体管（OPT）表现出2.49 × 10 ⁶的光敏度（ P ）、 6.84 × 10 ³ AW ⁻¹的光响应度（R ）和4.70 × 10 ¹⁶ Jones的超高探测率（D * ）紫外线，这是紫外线敏感 OPT 的最佳品质因数之一。这些优异的综合性能预示着其在集成光电子领域良好的应用前景。