<br>使用 C60/C70:TAPC 混合通道实现光致接触调制和灵敏度增强的有机光电晶体管,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

使用 C60/C70:TAPC 混合通道实现光致接触调制和灵敏度增强的有机光电晶体管
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-05 , DOI: 10.1021/acsami.3c13498
Dongho Choi ₁ , Hyukyun Kwon _{1,

2} , Haechang Lee ₁ , Kyu-Myung Lee ₃ , Yongsup Park _{3,

4} , Hanul Moon ₅ , Seunghyup Yoo ₁

Affiliation

有机光电晶体管 (OPT) 因其具有多种作用的潜力而备受关注，包括光传感、信号放大以及用于矩阵阵列时的寻址切换。然而，实现能够以足够的性能水平同时执行所有这些作用的 OPT 一直具有挑战性，因为具有高载流子迁移率的沟道材料通常表现出相对较低的光吸收。在这项工作中，我们提出了具有混合双层通道的OPT，该通道由纯C ₆₀层和C ₇₀和1,1-双(4-双(4-甲基-苯基)-氨基-苯基)的体异质结层组成-环己烷（TAPC）作为该问题的可能解决方案。虽然C ₆₀层用作具有高迁移率的主要载流子传输层，但C ₇₀ :TAPC层用作光活性层，其中光生载流子提供光致接触调制，这导致光敏性的显着增强。通过最大化吸收的优化设计，所提出的混合通道 OPT 显示出约 100% 的响应度。 180 A/W，比带有 C ₇₀ :TAPC 单通道的控制 OPT 高 4.5 倍。通过对通道的光致调制和OPT的接触电阻的深入分析，验证了操作机制和改进的根源。

"点击查看英文标题和摘要"

Organic Phototransistor with Light-Induced Contact Modulation and Sensitivity Enhancement Using a C60/C70:TAPC Hybrid Channel

Organic phototransistors (OPTs) are attracting a significant degree of interest as devices that have the potential to play multiple roles, including light sensing, signal amplification, and switching for addressing when they are used for matrix arrays. However, it has been challenging to realize OPTs that can perform all of these roles simultaneously at a sufficient performance level because the channel materials with high carrier mobility often exhibit relatively low photoabsorption. In this work, we propose OPTs with a hybrid bilayer channel consisting of a neat C₆₀ layer and a bulk-heterojunction layer of C₇₀ and 1,1-bis(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane (TAPC) as a possible solution to this issue. While the C₆₀ layer serves as the main carrier-transporting layer with high mobility, the C₇₀:TAPC layer operates as a photoactive layer wherein the photogenerated carriers provide photoinduced contact modulation that leads to a significant enhancement in photosensitivity. With the optimal design maximizing the absorption, the proposed hybrid-channel OPTs show a responsivity of ca. 180 A/W, which is 4.5 times higher than that of the control OPT with a C₇₀:TAPC single channel. The operation mechanism and the origin for the improvement are verified by an in-depth analysis of the photoinduced modulation of the channel and contact resistances of the OPTs.

更新日期：2023-12-05

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南