High Performance Solar-Blind UV Detectors Based on N-Type Wide Bandgap Organic Materials

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2024-10-09 DOI:10.1021/acsmaterialslett.4c0125210.1021/acsmaterialslett.4c01252

Jianing Wang, Qilin Zhang, Lintao Zeng, Yuanhong Gao, Xiwei Zheng, Zhimin Meng, Shuhan Cao, Wei Huang* and Hong Meng*,

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Abstract

A strategy based on N-type organic wide-bandgap materials to form heterojunctions enhances carrier separation and achieves high-performance UV detection. This approach addresses issues such as low UV detection performance and insufficient depth of detection wavelengths. In our study, we combined two N-type semiconductor materials with a p-type small molecule to form a heterojunction serving as the photosensitive layer. This configuration successfully achieved a high-performance solar-blind ultraviolet (SBUV) detector, exhibiting a maximum responsivity (R) of 227 A/W, an EQE of 1.1 × 10⁵%, and a peak detectivity of 3.3 × 10¹¹ Jones under 260 nm illumination with an intensity of 50 μW/cm². Furthermore, by employing Al₂O₃ with a high dielectric constant as the gate dielectric, we developed a detector operable with a low drive voltage of 1.8 V. This provides a valuable research paradigm for future organic ultraviolet detection endeavors.

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基于 N 型宽带隙有机材料的高性能太阳盲紫外线探测器

一种基于 N 型有机宽带隙材料形成异质结的策略可增强载流子分离，实现高性能紫外检测。这种方法解决了紫外检测性能低和检测波长深度不够等问题。在我们的研究中，我们将两种 N 型半导体材料与一种 p 型小分子结合起来，形成一个异质结，作为光敏层。在强度为 50 μW/cm2 的 260 纳米光照下，最大响应度 (R) 为 227 A/W，EQE 为 1.1 × 105%，峰值检测率为 3.3 × 1011 Jones。此外，通过采用高介电常数的 Al2O3 作为栅极电介质，我们开发出了一种可在 1.8 V 低驱动电压下工作的探测器。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.