Light‐Driven Reconfigurable Logic in a Monolithic Perovskite Device via Nonlinear Photoresponse Switching
Abstract
Abstract Modulating nonlinear carrier dynamics in a single‐layer device is essential for achieving complex logic operations with minimal power consumption; however, it remains challenging due to inherently linear charge transport and unipolar photoresponses. Here, a multifunctional optoelectronic logic gate (OELG) based on a bias‐free, single‐layer perovskite device is reported that exhibits light intensity‐dependent polarity switching. Incorporation of poly‐L‐lysine into MAPbI 3 enables trap‐state engineering for nonlinear response modulation. An asymmetric dual‐photogate architecture allows spatially controlled charge transport by tuning the position of incident light. This configuration enables the realization of all eight fundamental logic gate functions, including XOR and XNOR, in a single material and device. Additionally, the device independently handles two channels, amplitude inputs, and temporal modulation inputs. It performs logic operations not by pixel‐level imaging, but by applying a scenario‐based conceptual modulation map to the device, with the outputs derived from experimentally recorded photovoltage responses. These findings establish a promising platform for compact, energy‐efficient, light‐driven logic systems with potential applications in light fidelity (Li‐Fi) communication and on‐device artificial intelligence.
Article Details
Authors (14)
Dante Ahn
Sensor System Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
Youngsoo Jang
Department of Chemistry
Minz Lee
Sensor System Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
Wookyung Jeon
Department of Materials Engineering, Korea Aerospace University 2 , Goyang-city, Gyeonggi-do 10540,
Yohan Yoon
Department of Materials Engineering, Korea Aerospace University 2 , Goyang-city, Gyeonggi-do 10540,
Heon Lee
Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea
Assa Aravindh Sasikala
Research Unit of Sustainable Chemistry University of Oulu Oulu 90570 Finland
Namsoo Lim
Department of Energy and Materials Engineering Dongguk University‐Seoul Seoul 04620 Republic of Korea
Chandran Balamurugan
Department of Energy and Materials Engineering Dongguk University‐Seoul Seoul 04620 Republic of Korea
Hyeonghun Kim
School of Chemical Engineering Chonnam National University Gwangju 61186 Republic of Korea
Gun‐Young Jung
Gwangju Institute of Science and Technology (GIST) School of Materials Science and Engineering Gwangju 61005 Republic of Korea
Sooncheol Kwon
Department of Energy and Materials Engineering Dongguk University‐Seoul Seoul Republic of Korea
Minah Seo
Sensor System Research Center, Korea Institute of Science and Technology 5 , Seoul 02792,
Yusin Pak
Sensor System Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea