新型发光三极管器件设计与光电调控性能仿真研究  

Design of New Type Light-Emitting Triode Device and Simulation Research on Photoelectric Regulation Performance

作　　者：陈晶晶 郝绍坤 周雄图[1,2] 吴朝兴 张永爱[1,2] 郭太良 孙捷[1,2] Chen Jingjing;Hao Shaokun;Zhou Xiongtu;Wu Chaoxing;Zhang Yongai;Guo Tailiang;Sun Jie(College of Physical and Information Engineering,Fuzhou University,Fuzhou 350116,Fujian,China;Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350116,Fujian,China)

机构地区：[1]福州大学物理与信息工程学院,福建福州350116 [2]中国福建光电信息科学与技术创新实验室,福建福州350116

出　　处：《激光与光电子学进展》2022年第17期180-186,共7页Laser & Optoelectronics Progress

摘　　要：微米级间距发光二极管(Micro-LED)在材料、器件、工艺和应用场景方面具有诸多独特优势,随着未来显示器件向发光、开关、传感等多功能集成的方向发展,Micro-LED往往需要小电流密度驱动,驱动模式面临着巨大的挑战。为了实现小电流输入对LED发光器件的调控,基于相同的GaN材料和工艺平台,提出一种集发光和调控为一体的新型多功能集成发光三极管(LET)器件。该器件为双极型晶体管和发光二极管的垂直集成结构,通过改变基区电压控制电子运动到发光有源区的数量进而调控器件的发光效果;通过双极型晶体管(BJT)的电流增益效果实现了相同光效的输入电流从毫安级别降到了微安级别,并在一定电压范围内实现了高度线性调控。该LET器件可通过小功率信号进行控制和驱动,有望成为高密度、高集成度智能显示的一种变革性技术。Microlightemitting diodes(Micro-LEDs)offer many unique advantages in materials,devices,technologies,and process applications.In the future,display devices will evolve in the direction of multifunctional integration,such as lighting,swiching,and sensing,Micro-LEDs often require lowcurrentdensity driving,and the driving mode faces considerable challenges.To modulate LED devices with a low current input,herein,we propose a new type multifunctional integrated lightemitting triode device that integrates light emission and regulation functions,based on the same GaN material used in LEDs and process platform.The device shows a vertically integrated structure comprising bipolar transistors and LEDs.The number of electrons moving to the lightemitting active layer can be controlled by changing the base voltage,and the luminous effect of the device is simultaneously adjusted.Based on the current gain effect of bipolar junction transistor(BJT),the input current under the same light effect can be reduced from the milliampere to the microampere level and a highly linear regulation is achieved within a certain voltage range.The device can be controlled and driven using lowpower signals and is expected to become a revolutionary technology for highdensity and highintegration smart displays.

关 键 词：集成光学 发光三极管 集成器件 电流增益 调控性能 

分 类 号：TN383[电子电信—物理电子学] TN256