Light Emission Characteristics and Mechanics of Foldable Inorganic Light‐Emitting Diodes
Light Emission Characteristics and Mechanics of Foldable Inorganic Light‐Emitting Diodes
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DOI：
10.1002/adma.201000591
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发表时间：
2010-07
影响因子：
29.4
通讯作者：
Sang-il Park;A. Le;Jian Wu;Yonggang Huang;Xiuling Li;J. Rogers
中科院分区：
文献类型：
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作者：
Sang-il Park;A. Le;Jian Wu;Yonggang Huang;Xiuling Li;J. Rogers
有机发光二极管（oled）提供了传统无机器件的有吸引力的替代品，因为它们能够在非晶、薄的柔性衬底上大面积沉积，用于轻量级、耐用性和紧凑设计的系统。[1,2]最近的研究表明，无机发光二极管（ILED）技术可以用来重现许多这些特性，同时在亮度、稳健运行和效率方面提供性能优势。[3 - 5]在这里，我们报告了这种类型的ILED方法的进展，通过利用中性机械平面设计的概念，我们成功地开发了用于电子和光伏中的其他柔性无机器件技术，从而使可弯曲度大大超过以前的可弯曲度。这些研究包括对潜在力学的定量分析，通过对发射波长弯曲引起的位移的实验测量，首次将这种计算与器件性能之间的直接联系起来。结果提供了实现弯曲半径小至0.7 mm的策略
Organic light emitting diodes (OLEDs) offer attractive alternatives to conventional inorganic devices due to their ability to be deposited over large areas on amorphous, thin fl exible substrates, for systems with lightweight, durable, and compact designs. [ 1 , 2 ] Recent work suggests that inorganic light-emitting diode (ILED) technologies can be adapted to reproduce many of these characteristics, [ 3 ] while at the same time providing performance advantages in brightness, robust operation and effi ciency. [ 3–5 ] Here we report advances in this type of ILED approach designed to enable degrees of bendability than signifi cantly exceed those previously achieved, [ 3 ] by exploiting concepts of neutral mechanical plane designs that we successfully developed for use in other fl exible inorganic device technologies in electronics [ 6 ] and photovoltaics. [ 7 ] The studies include quantitative analysis of the underlying mechanics, with the fi rst direct connections between such calculations and device performance through experimental measurements of bending induced shifts in the emission wavelength. The results provide strategies to achieve bending to radii as small as 0.7 mm with