Design and assembly of an aqueous red CdTe QD-LED: major factors to fabricate aqueous QD-LEDs
Design and assembly of an aqueous red CdTe QD-LED: major factors to fabricate aqueous QD-LEDs
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DOI：
10.1039/c6ra15558h
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发表时间：
2016-08
期刊：
影响因子：
3.9
通讯作者：
Jinhua Du;Shuhong Xu;Chunlei Wang;Jiangyong Pan;J. Chen;Li Zhu;C. Lv;Yiping Cui
中科院分区：
文献类型：
--
作者：
Jinhua Du;Shuhong Xu;Chunlei Wang;Jiangyong Pan;J. Chen;Li Zhu;C. Lv;Yiping Cui
第一个水性红色 CdTe QD-LED 采用 ITO/PEDOT:PSS/PVK/CdTe QDs/ZnO/Al 结构制成。该器件被认为是一种先进的水性QD-LED，其开启电压约为5 V。此外，在10 V的电压下，其电流密度和亮度也将达到92 mA cm−2和58 cd m−2。此外，我们发现成功制造水性QD-LED有两个关键因素：（1）在QD溶液中添加润湿剂，（2）去除QD溶液中残留的复合离子。同时，如果 QD 溶液呈酸性，则水性 QD-LED 的 EL 强度会表现得更好。这些结果为水性 QD-LED 的进一步开发提供了一种有前景的方法。
The first aqueous red CdTe QD-LED was fabricated with the structure of ITO/PEDOT:PSS/PVK/CdTe QDs/ZnO/Al. The device has been considered to be an advanced aqueous QD-LED, which demonstrated a turn-on voltage of about 5 V. Further, its current density and brightness would also reach 92 mA cm−2 and 58 cd m−2 at the voltage of 10 V. Moreover, we found that there were two essential factors for fabricating an aqueous QD-LED successfully: (1) adding wet agent to the QD solution, (2) removing the composite ions remaining in the QD solution. Meanwhile, the EL intensity of the aqueous QD-LEDs will perform better if the solution of QDs is acidic. These results offer a promising approach to the further development of aqueous QD-LEDs.