High-resolution proximity sensor using flexible semi-transparent organic photo detector

被引：12

作者：

Chen, Chao-Hsuan ^{[1
,2
]}

Lin, Ching-Fu ^{[1
,2
]}

Wang, Kuan-Hsun ^{[1
,2
]}

Liu, Hung-Chuan ^{[1
,2
]}

Zan, Hsiao-Wen ^{[1
,2
]}

Meng, Hsin-Fei ^{[3
]}

Hortschitz, Wilfried ^{[4
]}

Steiner, Harald ^{[4
]}

Kainz, Andreas ^{[5
]}

Sauter, Thilo ^{[4
,6
]}

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu, Taiwan

[2] Natl Chiao Tung Univ, Coll Elect & Comp Engn, Inst Electroopt Engn, Hsinchu, Taiwan

[3] Natl Chiao Tung Univ, Inst Phys, Hsinchu, Taiwan

[4] Danube Univ Krems, Ctr Integrated Sensor Syst, Wiener Neustadt, Austria

[5] TU Wien, Inst Sensor & Actuator Syst, Vienna, Austria

[6] TU Wien, Inst Comp Technol, Vienna, Austria

来源：

ORGANIC ELECTRONICS | 2017年 / 49卷

关键词：

Flexible; Finger-type; Organic photodetector; Proximity sensor; Solution-processed; AIR; PHOTOTRANSISTORS;

D O I：

10.1016/j.orgel.2017.06.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a flexible proximity sensor to detect sub-centimeter distance with an ultra-high displacement resolution. The proximity sensor is realized by integrating a semi-transparent organic photo detector with a transparent top electrode and a finger-type bottom electrode. By placing the semitransparent finger-type photodetector on a light source, such as a light-emitting diode (LED), the photodetector can detect the light reflected from an object on top of the sensor. With the highly compact structure, the detecting range is from 1 mm to 30 mm. From 1 mm to 10 mm, the sensor is particularly sensitive and delivers a resolution of 1 mm. The air-stable photodetector can also be fabricated on a flexible substrate without encapsulation, enabling the integration with arbitrary light sources. After 1000 times bending, the flexible photodetector shows no obvious degradation. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：305 / 312

页数：8

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