Wearable red-green-blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing.
Wearable red-green-blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing.
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DOI：
10.1038/ncomms8149
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发表时间：
2015-05-14
影响因子：
16.6
通讯作者：
Kim, Dae-Hyeong
中科院分区：
文献类型：
--
作者：
Choi, Moon Kee;Yang, Jiwoong;Kang, Kwanghun;Kim, Dong Chan;Choi, Changsoon;Park, Chaneui;Kim, Seok Joo;Chae, Sue In;Kim, Tae-Ho;Kim, Ji Hoon;Hyeon, Taeghwan;Kim, Dae-Hyeong
具有超细像素的可变形全彩发光二极管是可穿戴电子产品的必需品，这需要在曲面上的共形集成以及视网膜状的高清晰度显示。然而，在多色配置、电致发光效率和/或多向变形性方面仍然存在挑战。在这里，我们提出了超薄，可穿戴的胶体量子点发光二极管阵列，利用凹版转印技术，它允许红，绿，蓝像素的高分辨率高达每英寸2,460像素的对齐。该技术易于扩展，适用于低电压驱动的像素化白色量子点发光二极管和电子纹身，在迄今为止报道的可穿戴发光二极管中显示出最佳的电致发光性能（7 V时为14，000 cd m−2）。在弯曲、起皱和起皱等机械变形条件下，器械在平坦、弯曲和回旋表面上的性能稳定。这些可变形器件阵列突出了在可穿戴电子产品中集成高清全色显示器的新可能性。 可变形和高分辨率的LED吸引了可穿戴电子产品的极大兴趣，但全色显示仍然具有挑战性。Choi等人利用印章印刷技术，构建了超薄RGB量子点像素阵列，在7 V的低电压下工作，发光效率为14，000 cd m−2。
Deformable full-colour light-emitting diodes with ultrafine pixels are essential for wearable electronics, which requires the conformal integration on curvilinear surface as well as retina-like high-definition displays. However, there are remaining challenges in terms of polychromatic configuration, electroluminescence efficiency and/or multidirectional deformability. Here we present ultra-thin, wearable colloidal quantum dot light-emitting diode arrays utilizing the intaglio transfer printing technique, which allows the alignment of red–green–blue pixels with high resolutions up to 2,460 pixels per inch. This technique is readily scalable and adaptable for low-voltage-driven pixelated white quantum dot light-emitting diodes and electronic tattoos, showing the best electroluminescence performance (14,000 cd m−2 at 7 V) among the wearable light-emitting diodes reported up to date. The device performance is stable on flat, curved and convoluted surfaces under mechanical deformations such as bending, crumpling and wrinkling. These deformable device arrays highlight new possibilities for integrating high-definition full-colour displays in wearable electronics. Deformable and high-resolution LEDs have attracted great interest for wearable electronics, but full-colour display is still challenging. Using a stamp printing technology, Choi et al. build ultra-thin RGB quantum dot pixel arrays with luminous efficiency of 14,000 cd m−2 operated at low voltage of 7 V.
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DOI：
10.1126/science.1232437
发表时间：
2013-04-12
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Kim TI;McCall JG;Jung YH;Huang X;Siuda ER;Li Y;Song J;Song YM;Pao HA;Kim RH;Lu C;Lee SD;Song IS;Shin G;Al-Hasani R;Kim S;Tan MP;Huang Y;Omenetto FG;Rogers JA;Bruchas MR
通讯作者：
Bruchas MR
影响因子：
29.4
作者：
Jang, Ho Seong;Yang, Heesun;Jeon, Duk Young
通讯作者：
Jeon, Duk Young
影响因子：
41.2
作者：
Kim, Rak-Hwan;Kim, Dae-Hyeong;Rogers, John A.
通讯作者：
Rogers, John A.
影响因子：
10.8
作者：
Anikeeva, Polina O.;Halpert, Jonathan E.;Bulovic, Vladimir
通讯作者：
Bulovic, Vladimir
影响因子：
16.6
作者：
Bae, Wan Ki;Park, Young-Shin;Lim, Jaehoon;Lee, Donggu;Padilha, Lazaro A.;McDaniel, Hunter;Robel, Istvan;Lee, Changhee;Pietryga, Jeffrey M.;Klimov, Victor I.
通讯作者：
Klimov, Victor I.