我组沈健在Advanced Optical Materials上发表论文

题目：

Red Fluorescent Carbon Dots with Alkyl Chain AchievingStable Electroluminescence via an In Situ Electric Excitation

作者：

Jian Shen,[a] Tianyang Zhang,[a] Wan-shan Shen,[a] Zenan Li,[a] Weijie Yuan,[a] Hui Huang,[a]Yang Liu,[a]* Liang-sheng Liao,[a] and Zhenhui Kang,[a]*

单位：

[a] Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, People’s Republic of China.

[b]Macao Institute of Materials Science and Engineering (MIMSE) MUST−SUDA Joint Research Center for Advanced Functional Materials Macau University of Science and Technology Taipa 999078, China.

摘要：

The energy barrier between the highest occupied molecular orbital (HOMO) of the emission layer (EML) and the hole transport layer material (HTL) restricts the development of carbon dots (CDs) based light-emitting diodes (LEDs). Here, the fabrication of red fluorescent CDs (RCDs) by a one-step solvothermal method is reported. These RCDs have a photoluminescence quantum yield (PLQY) of 47.97% and a full width at half maximum (FWHM) of 26 nm. This study also shows the RCDs-based LEDs fabrication with Poly(9,9-dioctylfluorene-co-N-(4-butylphenyl) diphenylamine (TFB) as HTL. In normal case, these devices are not able to work due to the large interfacial energy barrier between RCDs and TFB. While, the RCDs-LEDs can overcome through interfacial energy barriers and achieve stable carrier injecting by a simple in situ electric excitation at the current of 50 mA cm⁻². This work provides a new strategy to overcome the obstacle of mismatch of interfacial energy levels in the LEDs by an in situ electric excitation.

影响因子：

9

分区情况：

1区

链接：

https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202302178