TY - JOUR
T1 - High-performance optical noncontact controlling system based on broadband PtTex/Si heterojunction photodetectors for human–machine interaction
AU - Li, Zhexin
AU - Ran, Wenhao
AU - Yan, Yongxu
AU - Li, Linlin
AU - Lou, Zheng
AU - Shen, Guozhen
N1 - Publisher Copyright:
© 2021 The Authors. InfoMat published by UESTC and John Wiley & Sons Australia, Ltd.
PY - 2022/1
Y1 - 2022/1
N2 - Noncontact interaction systems have attracted considerable research attention in recent years because of convenient operation, sterility, and injury prevention. However, the insufficient sensing distance and weak robustness of noncontact interaction systems for complex environments limit their practical applications. Here, we designed an integrated optical noncontact controlling system (ONCS) based on PtTex/Si optoelectronic heterojunction array. Broadband sensitive photoresponse is realized at zero bias voltage, with excellent detectivity and responsivity, boosting the noncontact sensing distance to at least 150 mm. Consequently, the system can perform noncontact detection, encoding, and control by recognizing shadow-induced spatiotemporal sequence changes in heterojunction array photocurrents. As a proof of concept, different interactive functions have been demonstrated with good accuracy and robustness by encoding finger movement above the ONCS. This study provides a new perspective for constructing high-performance noncontact interaction systems. (Figure presented.).
AB - Noncontact interaction systems have attracted considerable research attention in recent years because of convenient operation, sterility, and injury prevention. However, the insufficient sensing distance and weak robustness of noncontact interaction systems for complex environments limit their practical applications. Here, we designed an integrated optical noncontact controlling system (ONCS) based on PtTex/Si optoelectronic heterojunction array. Broadband sensitive photoresponse is realized at zero bias voltage, with excellent detectivity and responsivity, boosting the noncontact sensing distance to at least 150 mm. Consequently, the system can perform noncontact detection, encoding, and control by recognizing shadow-induced spatiotemporal sequence changes in heterojunction array photocurrents. As a proof of concept, different interactive functions have been demonstrated with good accuracy and robustness by encoding finger movement above the ONCS. This study provides a new perspective for constructing high-performance noncontact interaction systems. (Figure presented.).
UR - http://www.scopus.com/inward/record.url?scp=85123474705&partnerID=8YFLogxK
U2 - 10.1002/inf2.12261
DO - 10.1002/inf2.12261
M3 - Article
AN - SCOPUS:85123474705
SN - 2567-3165
VL - 4
JO - InfoMat
JF - InfoMat
IS - 1
M1 - e12261
ER -