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A multifunctional optical-thermal logic gate sensor array based on ferroelectric BiFeO_(3) thin films

InfoMat 2023年第5期5卷 111-120页

作者： Li Wu Yun Ji Huiyu Dan Chris RBowen Ya Yang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijingthe People's Republic of China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanningthe People's Republic of China Department of Mechanical Engineering University of BathBathUK

The growing need to process a diverse range of data has ignited effort in developing new multifunctional logic gate *** this article,we report a new form of all-in-one logic gate system that exploits the photoresponsivity of a self-powered multifunctional BiFeO_(3)(BFO)sensor *** BFO sensor can not only detect both light intensity and temperature,but it can also execute three common logic gates of“AND”,“OR”,and“NOT”by converting optical and thermal inputs into electrical *** diverse functionality of the BFO logic gate sensor array utilizes the unique light-and temperaturecontrolled energy band structure and carrier behavior of the BFO *** demonstrate the potential,a 3×3 logic gate sensor matrix is developed,which successfully detected light and temperature distributions,and accurately produced the three basic logic gate *** work provides a new route to construct highly integrated multifunctional electronic devices for the advancement of large sensing,communication,and computing operations.

关键词： BiFeO_(3) logic gate optical-thermal photocurrent photovoltage

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Development of optical-thermal coupled model for phosphor-converted LEDs

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Frontiers of Optoelectronics 2019年第3期12卷 249-267页

作者： Xinglu QIAN Jun ZOU Mingming SHI Bobo YANG Yang LI Ziming WANG Yiming LIU Zizhuan LIU Fei ZHENG School of Science Shanghai Institute of TechnologyShanghai 201418China Zhejiang Emitting Optoelectronic Technology Co Ltd.Zhejiang 314100China School of Material Science and Engineering Shanghai Institute of TechnologyShanghai 201418China

In this review, first, we discussed the effect of phosphor features on optical properties by the software simulation in detail. A combination of these parameters: phosphor material, phosphor particle size and particle distribution, phosphor layer concentration, phosphor layer thickness, geometry, and location of the phosphor layer, will result in the final optical performance of the phosphor layer. Secondly, we introduced how to improve light extraction efficiency with various proposed methods. Thirdly, we summarized the thermal models to predict the phosphor temperature and the junction temperature. To stabilize the optical performance of phosphor-converted light emitting diodes (PC-LEDs), much effort has been made to reduce the junction temperature of the LED chips. The phosphor temperature, a critical reliability concern for PC-LEDs, should be attracted academic interest. Finally, we summed up optical-thermal coupled model for phosphors and summarized future optical- thermal issues exploring the light quality for LEDs. We foresee that optical-thermal coupled model for PC-LEDs should be paid more attention in the future.

关键词： phosphor-converted light emitting diodes (PC-LEDs) optical-thermal coupled model software simulation

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