The dependence of the QDLED performance on the location of colloidal quantum dots

  • S.M.Bagher Ghorashi University of Kashan
  • neda Heydari University of Kashan
  • Mohammadreza Fathollahi Qom University of Technology
Keywords: Quantum dot, Efficiency, Light emitting diode, Location

Abstract

All types of light emitting diodes (LEDs) are desirable because of their widespread applications. The light emitting diode based on quantum dots (QDLEDs) have a lot of unique properties attracted more attention. Predicting the performance of QDLEDs can lead to better and more efficient design of the device. In this paper, we have attempted to investigate the dependence of the device performance on the location of quantum dots (QDs) and determine the best location for the QDs in the QDLEDs. The QDs are located in five different position and results are compared with each other. The results show that the closer the QDs to the hole transport layer (HTL), the better the luminescence. This improvement can be explained by the two charge transport mechanism, direct charge injection and exciton energy transfer.

References

REFERENCES
[1] S. Dayneko, D. Lypenko, P. Linkov, N. Sannikova, P. Samokhvalov, V. Nikitenko, and A. Chistyakov, “Application of CdSe/ZnS/CdS/ZnS core–multishell quantum dots to modern OLED technology,” Materials Today: Proceedings, vol. 3, pp.211-215, Jan. 2016.
[2] S. Dayneko, D. Lypenko, P. Linkov, A. Tameev, I. Martynov, P. S. Samokhvalov, and A. Chistyakov, “Effect of surface ligands on the performance of organic light-emitting diodes containing quantum dots,” In Optoelectronic Devices and Integration, vol. 9270, p. 927009, Oct. 2014.
[3] D. H. Emon, M. Kim, M. T. Sharbati, and H. K. Kim, “Injection of 2D electron gas into a quantum-dot organic light-emitting diode structure on silicon substrate,” Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, vol. 34, p.06KJ01, Nov. 2016.
[4] X. Yang, D. Zhao, K. S. Leck, S. T. Tan, Y. X. Tang, J. Zhao, H. V. Demir, and X. W. Sun, “Full visible range covering InP/ZnS nanocrystals with high photometric performance and their application to white quantum dot light‐emitting Diodes,” Advanced Materials, vol. 24, pp.4180-4185, Aug. 2012.
[5] Z. Hu, Y. Yin, M. U. Ali, W. Peng, S. Zhang, D. Li, T. Zou, Y. Li, S. Jiao, S. J. Chen, and C. Y. Lee, “Inkjet Printed Uniform Quantum Dots as Color Conversion Layers for Full-color OLED Displays,” Nanoscale, Dec. 2019.
[6] SONY ANNOUNCES 2013 BRAVIA TVS Sony. web.archive.org. 8 March 2013.
[7] W. Cao, C. Xiang, Y. Yang, Q. Chen, L. Chen, X. Yan, and L. Qian, “Highly stable QLEDs with improved hole injection via quantum dot structure tailoring,” Nature communications, vol. 9, pp.1-6, Jul. 2018.
[8] J. Song, O. Wang, H. Shen, Q. Lin, Z. Li, L. Wang, X. Zhang, and L. S. Li, “Over 30% External Quantum Efficiency Light‐Emitting Diodes by Engineering Quantum Dot‐Assisted Energy Level Match for Hole Transport Layer,” Advanced Functional Materials, vol. 29, p.1808377, Aug. 2019.
[9] Z. Yang, Q. Wu, G. Lin, X. Zhou, W. Wu, X. Yang, J. Zhang, and W. Li, “All-solution processed inverted green quantum dot light-emitting diodes with concurrent high efficiency and long lifetime,” Materials Horizons, vol. 6, pp.2009-20, Aug. 2019.
[10] L. Wang, J. , Lin, Y. Hu, X. Guo, Y. Lv, Z. Tang, J. Zhao, Y. Fan, N. Zhang, Y. Wang, and X. Liu, “Blue quantum dot light-emitting diodes with high electroluminescent efficiency,” ACS applied materials & interfaces, vol. 9, pp.38755-38760, Nov. 2017.
[11] O. O. Matvienko, O. S. Kryzhanovska, Y. N. Savin, O. M. Vovk, N. V. Pogorelova, and V. V. Vashchenko, “Hybrid bulk and planar heterojunctions with electroluminescent quantum dots CdZnSeS and poly (dioctylfluorene),” Functional materials, vol. 19, pp.533-538, Sep. 2012.
[12] P. O. Anikeeva, C. F. Madigan, J. E. Halpert, M. G. Bawendi, and V. Bulović, “Electronic and excitonic processes in light-emitting devices based on organic materials and colloidal quantum dots,” Physical Review B, vol. 78, p.085434, Aug. 2008.
[13] H. Zamani Siboni, B. Sadeghimakki, S. Sivoththaman, and H. Aziz, “Very High Brightness Quantum Dot Light-Emitting Devices via Enhanced Energy Transfer from a Phosphorescent Sensitizer,” ACS applied materials & interfaces, vol. 7, pp. 25828-25834, Nov. 2015.
[14] K. S. Leck, Y. Divayana, D. Zhao, X. Yang, A.P. Abiyasa, E. Mutlugun, Y. Gao, S. Liu, S. T. Tan, X. W. Sun, and H. V. Demir, “Quantum dot light-emitting diode with quantum dots inside the hole transporting layers,” ACS applied materials & interfaces, vol. 5, pp.6535-6540, Jul. 2013.
[15] A. Tang, F. Teng, S. Xiong, Y. Wang, B. Feng, and Y. Hou, “Investigation on nanocrystals/polymer light-emitting diodes with different-sized water-sol CdSe nanocrystals,” Journal of The Electrochemical Society, vol. 155, pp.K190-K194, Oct. 2008.
[16] A.W. Tang, F. Teng, Y. H. Gao, D. Li, S. L. Zhao, C. J. Liang, and Y. S. Wang, “White light emission from organic–inorganic hererostructure devices by using CdSe quantum dots as emitting layer,” Journal of luminescence, vol. 122, pp.649-651, Jan. 2007.
[17] Ch. S. Sohn, (2003). Commercialization potential of quantum dot light emitting devices, Available: https://dspace.mit.edu/handle/1721.1/7973.
Published
2020-06-20
How to Cite
Ghorashi, S., Heydari, neda, & Fathollahi, M. (2020). The dependence of the QDLED performance on the location of colloidal quantum dots. Majlesi Journal of Electrical Engineering, 14(3). Retrieved from http://mjee.iaumajlesi.ac.ir/index/index.php/ee/article/view/3654
Section
Articles