PEDOT:PSS/Ti3C2Tx 复合空穴传输层对包晶石发光二极管性能的影响

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-11-07 DOI:10.1016/j.jlumin.2024.120976

Hui Zhang , Zhenyang Wang , Zhixing Chen , Xingyue Zhang , Yuanming Zhou , Fei Mei

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引用次数: 0

摘要

二维过渡金属碳化物 MXenes（通常称为 Ti3C2Tx）因其独特的光电特性而备受关注。本文在 PEDOT:PSS 中加入 MXenes 材料 Ti3C2Tx，制备了 PEDOT:PSS/Ti3C2Tx 复合空穴传输层（HTLs），并制作和研究了准二维过氧化物发光二极管（PeLEDs）。当 Ti3C2Tx 的添加浓度为 0.25 mg/mL 时，最佳器件的最大亮度为 6250 cd/m2，电流效率为 6.17 cd/A，分别比不添加 Ti3C2Tx 的参考器件高出 133 % 和 112 %。这表明，在 PEDOT:PSS 中添加 Ti3C2Tx 可以提高空穴注入效率和空穴传输层的导电性，并钝化过氧化物薄膜的缺陷，从而提高 PeLED 的光电性能。本研究的结果表明，PEDOT:PSS/Ti3C2Tx 复合 HTL 在 PeLED 中具有相当大的应用潜力。

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Impact of PEDOT:PSS/Ti3C2Tx composite hole transport layer on the performance of perovskite light emitting diodes

The two-dimensional transition metal carbide MXenes, often designated by Ti₃C₂T_x, have garnered significant interest on account of their distinctive optoelectronic characteristics. In this paper, PEDOT:PSS/Ti₃C₂T_x composite hole transport layer (HTLs) was prepared by adding the MXenes material Ti₃C₂T_x into PEDOT:PSS, and quasi-two-dimensional perovskite light-emitting diodes (PeLEDs) were fabricated and investigated. While the addition concentration of Ti₃C₂T_x was 0.25 mg/mL, the optimal device shows the maximum luminance of 6250 cd/m², and the current efficiency of 6.17 cd/A, which is 133 % and 112 % higher than the reference device without Ti₃C₂T_x, respectively. It is indicated that the additive incorporation of Ti₃C₂T_x in PEDOT:PSS can improve the efficiency of hole injection and conductivity of hole transport layer, and passivate the defects of perovskite film, thus enhancing the optoelectronic performance of PeLEDs. The findings of this study indicate that the PEDOT:PSS/Ti₃C₂T_x composite HTLs has considerable potential for application in PeLEDs.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.