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Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal

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精密设计的单立体多频段LED用于同时发射短波长和中波长红外辐射.

Hee Joon Jung¹, Dongwan Kim¹, Phuc Dinh Nguyen^1,2

¹Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea.

Advanced materials (Deerfield Beach, Fla.)

|September 26, 2025

概括

研究人员开发了新的多频段发光二极管 (LED),用于同时发射短波长红外线 (SWIR) 和中波长红外线 (MWIR). 这一突破克服了以前的局限性,使单个设备的双带操作成为先进的光电子设备的可能.

关键词:

在红外线下,红外线是指红外线.发光二极管是一种发光二极管.变形的缓冲层是一种缓冲层.多频段的多频段服务.量子井是一个量子井.

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科学领域:

光电学是指光电子产品.
半导体物理半导体物理
材料科学材料科学材料科学

背景情况:

多个量子井 (MQW) 发光二极管 (LED) 提供精确的波长控制,但由于格子不匹配和效率问题,在短波长红外 (SWIR) 和中波长红外 (MWIR) 波段的同时发射方面存在困难.
目前的LED通常只在一个红外频段工作,这限制了它们在多光谱分析中的应用.

研究的目的:

为了展示能够同时发射SWIR和MWIR的单体多频段MQWLED.
为了克服与将不同的带隙能量集成到单个基板上的技术挑战,用于双频红外辐射.

主要方法:

通过量子井 (QWs) 中的Sb兴奋剂利用应变工程来诱导受控的晶格扭曲,以实现平衡的应变补偿和连贯的表观.
减少了InAsSb QW厚度,以增强量子封闭,从而实现双频段发射.
开发了一个基于模拟的制造可行性图,以指导额外的多频段LED的设计.

主要成果:

成功展示了具有2.87微米和3.18微米的同时SWIR和MWIR发射的单体MQWLED.
在可行性图的指导下,制造了一个额外的单立体LED,同时发射2.63微米和3.34微米.
通过应变工程和优化QW厚度,在MQW中实现了原子利的接口.

结论:

多频段发射的单体集成到一个单一的LED设备减少了尺寸和复杂性.
这些多频段LED可为未来的光电子应用提供先进的多光谱分析.
开发的应变工程技术对于在复杂的异构结构中实现连贯的表层和高质量的接口至关重要.