材料科学
量子点
光电子学
发光二极管
亮度
二极管
透射率
有机发光二极管
纳米技术
光学
图层(电子)
物理
作者
Moon Kee Choi,Jiwoong Yang,Dong Chan Kim,Zhaohe Dai,Junhee Kim,Hyojin Seung,Vinayak S. Kale,Sae Jin Sung,Chong Rae Park,Nanshu Lu,Taeghwan Hyeon,Dae‐Hyeong Kim
标识
DOI:10.1002/adma.201703279
摘要
Displaying information on transparent screens offers new opportunities in next-generation electronics, such as augmented reality devices, smart surgical glasses, and smart windows. Outstanding luminance and transparency are essential for such "see-through" displays to show vivid images over clear background view. Here transparent quantum dot light-emitting diodes (Tr-QLEDs) are reported with high brightness (bottom: ≈43 000 cd m-2 , top: ≈30 000 cd m-2 , total: ≈73 000 cd m-2 at 9 V), excellent transmittance (90% at 550 nm, 84% over visible range), and an ultrathin form factor (≈2.7 µm thickness). These superb characteristics are accomplished by novel electron transport layers (ETLs) and engineered quantum dots (QDs). The ETLs, ZnO nanoparticle assemblies with ultrathin alumina overlayers, dramatically enhance durability of active layers, and balance electron/hole injection into QDs, which prevents nonradiative recombination processes. In addition, the QD structure is further optimized to fully exploit the device architecture. The ultrathin nature of Tr-QLEDs allows their conformal integration on various shaped objects. Finally, the high resolution patterning of red, green, and blue Tr-QLEDs (513 pixels in.-1 ) shows the potential of the full-color transparent display.
科研通智能强力驱动
Strongly Powered by AbleSci AI