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模仿突触行为:利用TPBi化小分子光电晶体管中的离电流,用于宽带波长识别

Seungme Kang¹, Sunyoung Sohn², Hyeran Kim³

¹Department of Electronic Engineering, Gachon University, Seongnam 13120, Republic of Korea.

ACS applied materials & interfaces

|February 23, 2024

概括

研究人员使用dinaphtho[2,3-b:2:2]开发了一种新的光传感器.

科学领域:

有机电子学有机电子学
神经形态计算是一种神经形态计算.
光电探测器技术的技术.

背景情况:

光晶体管对于像图像传感器和神经形态设备等应用至关重要.
光晶体管中的材料选择极大地影响了设备的性能.
有机半导体为先进的电子应用提供可调节的特性.

研究的目的:

开发一种新的光电晶体管,模拟人工突触行为.
为了研究dinaphtho[2,3-b:2',3'- f]thieno[3,2-b]thiophene (DNTT) 的光响应特征,添加了2.2',2′′-(1,3,5-benzinetriyl) -tris(1-phenyl-1-H-benzimidazole) (TPBi) 的剂量.
为了利用非电流调制来模拟突触功能.

主要方法:

使用DNTT作为通道材料制造一个p型有机光电晶体管.
将DNTT晶体管与有机半导体TPBi. . . 进行合.
在不同的光波长 (400-1000 nm) 下,光传感器的非电流响应的表征.
基于调节的非电流水平的人工突触行为的模拟.

主要成果:

没有使用过的DNTT晶体管显示出极小的关闭电流变化,除了400nm.
用TPBi合的DNTT光电晶体管在所有测试波长中呈现出增加的离流.
DNTT光电晶体管显示了从400nm到1000nm的广泛光响应.
人工突触行为成功模拟,实现了超过70%的识别率.

结论:

用TPBi合的DNTT光晶体管显示出有希望的广泛光响应.
这些设备中的非电流调制有效地模拟了人造突触功能.
这项研究有助于开发有机神经形态装置.

关键词:

兴奋剂的影响兴奋剂效应有机半导体有机半导体摄影探测器的摄影探测器摄影传感器是一种光传感器.突触器件是突触器件中的一个.

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