High-Polarization-Sensitivity Polarimetric Organic Phototransistors Based on Highly Stretchable Semicrystalline Polymer Semiconductors

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-06-17 DOI:10.1021/acsmaterialslett.4c00719

Gayeon Park, Mingi Sung, Hyeonjin Yoo, Yejin Kim, Junghoon Lee and Byoung Hoon Lee*,

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Abstract

Polarimetric phototransistors have attracted increasing interest due to their ability to recognize the polarization state of incident linearly polarized light. However, advances in their development have been hindered by the low polarization sensitivity that results from the modest polarization dichroic ratios (PDRs) of the photoactive materials. In this study, we present polarimetric organic phototransistors (P-OPTs) with a remarkably high polarization sensitivity exceeding 8.0. These P-OPTs are fabricated by transferring highly stretched (∼200%) thin films of a polymer semiconductor, poly(4-(5-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b’]dithiophen-2-yl)thiophen-2-yl)-5,6-difluoro-2-octyl-7-(thiophen-2-yl)-2H-benzo[d][1,2,3]triazole) (PCDTFBTA), which exhibits a high PDR of approximately 4.0. This improved polarization sensitivity ranks among the highest sensitivities reported for polarimetric phototransistors, demonstrating high photoresponsivity (R ≈ 500 A W^–1), high external quantum efficiency (EQE ≈ 1000%), high photosensitivity (P ≈ 1.8 × 10⁴), high specific detectivity (D* ≈ 5.9 × 10¹² Jones), and short rise (τ_r ≈ 3.3 ms) and decay (τ_d ≈ 3.4 ms) times.

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基于高度可拉伸半晶聚合物半导体的高偏振灵敏度偏振有机光电晶体管

偏振光电晶体管能够识别入射线性偏振光的偏振状态，因此越来越受到人们的关注。然而，由于光活性材料的偏振分色比（PDR）不高，导致偏振灵敏度低，阻碍了它们的发展。在本研究中，我们展示了偏振灵敏度超过 8.0 的偏振有机光电晶体管（P-OPT）。这些 P-OPT 是通过转移高度拉伸（∼200%）的聚合物半导体薄膜聚（4-(5-(4,4-二十六烷基-4H-环戊二烯并[1,2-b：5,4-二十六烷基-4H-环戊并[1,2-b: 5,4-b']二噻吩-2-基）噻吩-2-基）-5,6-二氟-2-辛基-7-（噻吩-2-基）-2H-苯并[d][1,2,3]三唑（PCDTFBTA）薄膜，其 PDR 约为 4.0.这种提高了的偏振灵敏度是已报道的偏振光晶体管中灵敏度最高的，表现出高光致发光率（R ≈ 500 A W-1）、高外部量子效率（EQE ≈ 1000%）、高光敏度（P ≈ 1.8 × 104）、高比检出率（D* ≈ 5.9 × 1012 琼斯）以及短的上升（τr ≈ 3.3 毫秒）和衰减（τd ≈ 3.4 毫秒）时间。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.