Interactive display devices integrating multiple functions have become a development trend of display technology.The excellent luminescence properties of perovskite quantum dots(PQDs)make it an ideal luminescent material for the next generation of wide-color gamut displays.Here we design and fabricate dual-function light-sensing/displaying light-emitting devices based on PQDs.The devices can display information as an output port,and simultaneously sense outside light signals as an input port and modulate the display information in a non-contact mode.The dual functions were attributed to the device designs:(1)the hole transport layer in the devices also acts as the light-sensing layer to absorb outside light signals;(2)the introduced hole trapping layer interface can trap holes originating from the light-sensing layer,and thus tune the charge transport properties and the light-emitting intensities.The sensing and display behavior of the device can be further modulated by light signals with different time and space information.This fusion of sensing and display functions has broad prospects in non-contact interactive screens and communication ports.

Songman Ju;Yangbin Zhu;Hailong Hu;Yang Liu;Zhongwei Xu;Jinping Zheng;Chaomin Mao;Yongshen Yu;Kaiyu Yang;Lihua Lin;Tailiang Guo;Fushan Li

Institute of Optoelectronic Technology,Fuzhou University,Fuzhou 350116,China;Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350116,China;School of Intelligent Manufacturing and Electronic Engineering,Wenzhou University of Technology,Wenzhou 325035,China;The Straits Institute of Flexible Electronics(SIFE,Future Technologies),Fujian Normal University,Fuzhou 350117,China

光：科学与应用（英文版）

[1]Songman Ju;Yangbin Zhu;Hailong Hu;Yang Liu;Zhongwei Xu;Jinping Zheng;Chaomin Mao;Yongshen Yu;Kaiyu Yang;Lihua Lin;Tailiang Guo;Fushan Li-.Dual-function perovskite light-emitting/sensing devices for optical interactive display)[J].光：科学与应用（英文版）,2022(12):2952-2960

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