Functionalized Interlayers in Self-Powered Organic Photodiodes for Enhanced Near-Infrared Sensing

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-01-22 DOI:10.1002/aenm.202403532

Yongju Lee, Swarup Biswas, Dong Hyun Nam, Jae Won Park, Hyowon Jang, Hyojeong Choi, Juhwan Kim, Dong-Wook Park, Hyeok Kim

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Abstract

There is a growing interest in fabricated organic material-based photodiodes (OPDs) since they are lightweight, flexible, and cost-effective to manufacture. Notably, they exhibit near-infrared photo-sensing capabilities that are self-powered, a feature attributed to the tunable optical properties of organic semiconductor (OSC) materials. Nonetheless, the application of OPDs in the semiconductor industry encounters challenges compared to their inorganic counterparts, such as low sensitivity and limited durability. In this study, a self-powered OPD using a poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl)]:biaxial active layer of phenyl-C70-butyric acid methyl ester (PTB7-Th:PC₇₀BM) and an organic hole transport layer (HTL) composed of poly(3,4-ethylenedioxythiophene) and poly(styrene sulfonate) (PPY:PSS) is developed. These results highlight the effectiveness of PPY:PSS as an HTL, demonstrating distinct improvements in efficiency, photosensitivity, photo-detectivity, and operational stability of the OPD when the weight ratio between the PPY and PSS is 1:2.

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用于增强近红外传感的自供电有机光电二极管的功能化中间层

人们对基于有机材料的光电二极管（opd）越来越感兴趣，因为它们重量轻，灵活，制造成本效益高。值得注意的是，它们表现出自供电的近红外光敏能力，这一特征归因于有机半导体（OSC）材料的可调谐光学特性。然而，与无机材料相比，opd在半导体行业的应用面临着一些挑战，比如灵敏度低、耐用性有限。本研究利用聚[4,8-二（5-（2-乙基己基）噻吩-2-基）苯并[1,2-b:4,5-b ']二噻吩-2,6-二基-alt-(4-（2-乙基己基）-3-氟噻吩[3,4-b]噻吩-)-2-羧酸-2-6-二基]：苯基- c70 -丁酸甲酯双轴活性层（PTB7-Th:PC70BM）和由聚（3,4-乙基二氧噻吩）和聚（苯乙烯磺酸盐）（PPY:PSS）组成的有机空孔传输层（HTL），开发了自供电OPD。这些结果突出了PPY:PSS作为HTL的有效性，当PPY和PSS的重量比为1:2时，OPD的效率、光敏性、光探测性和操作稳定性都有明显改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.