Citation: DONG Dan, MIN Zhiyuan, LIU Jun, HE Gufeng. Improved Hole Injection Property of Solution-Processed MoO₃ with[J]. Acta Physico-Chimica Sinica, ;2018, 34(11): 1286-1292. doi: 10.3866/PKU.WHXB201803222 shu

Improved Hole Injection Property of Solution-Processed MoO₃ with

National Engineering Lab for TFT-LCD Materials and Technologies, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

Corresponding author: HE Gufeng, gufenghe@sjtu.edu.cn
Received Date: 28 February 2018
Revised Date: 19 March 2018
Accepted Date: 19 March 2018
Available Online: 22 November 2018
Fund Project: The project was supported by the National Key R&D Program of China (2017YFB1002900)the National Key R&D Program of China 2017YFB1002900

The hole injection layer (HIL) plays a significant role in determining the performances of organic light-emitting diodes (OLEDs), especially when hole transport materials with deep highest occupied molecular orbital levels (HOMOs) are employed. Intensive efforts have been devoted to exploring novel hole injection materials with good solution-processing abilities in recent years. In this study, the solution-processed molybdenum trioxide (s-MoO₃) is prepared via an ultra-facile method. Three different s-MoO₃ layers prepared by three different methods, viz. layers annealed at 150 ℃ (s-MoO₃ (150)), layers annealed at 150 ℃ and then processed in UV-ozone for 15 min (s-MoO₃ (150, UVO)), and layers processed in UV-ozone for 15 min without annealing (s-MoO₃ (UVO)), are obtained to investigate their influences on hole injection. The device with the s-MoO₃ (150) layer has the lowest current density and the largest driving voltage, showing poor hole injection ability. In contrast, with the s-MoO₃ (150, UVO) layer as HIL, the OLED produces a greatly enhanced current and sharply reduced driving voltage, comparable to the device using vacuum-evaporated MoO₃. Similar results are obtained for the device with the s-MoO₃ (UVO) film, suggesting that high-temperature annealing is not essential for the s-MoO₃ film with UV-ozone treatment. Hole injection efficiencies of MoO₃ films are quantitatively characterized by analyzing the space-charge-limited current of hole-only devices; the hole injection efficiencies of s-MoO₃ (150, UVO) and s-MoO₃ (UVO)-based devices are ~0.1, far exceeding that of the s-MoO₃ (150)-based device (10⁻⁵). XPS analysis is performed to detect the impact of the above treatments on the surface electronic properties of the s-MoO₃ films. A typical characteristic of Mo⁵⁺ species is obtained for the s-MoO₃ (150) film and a high-binding-energy shoulder appears in the O 1s peak of the s-MoO₃ (150) film, indicating the existence of oxygen vacancies and oxygen adsorbed at the surface of s-MoO₃ (150) film. When UV-ozone treatment is applied to this s-MoO₃ (150) film, it produces a decrease of Mo⁵⁺ state and elimination of oxygen-rich adsorbates, resulting in MoO₃ stoichiometry similar to that of the vacuum-evaporated MoO₃ film. Consequently, a maximum current efficiency of 48.3 cd∙A⁻¹ is realized with the optimized UV-ozone treated s-MoO₃ HIL. It This UV-ozone treated s-MoO₃ should have widespread applications in low-cost solution-processed OLEDs as an excellent hole injection layer.
- Hole injection property,
- Solution process,
- Organic light-emitting diode,
- Stoichiometry,
- UV-ozone treatment
1. [1]
  Tang, C. W.; Vanslyke, S. A. Appl. Phys. Lett. 1987, 51, 913. doi: 10.1063/1.98799 doi: 10.1063/1.98799
2. [2]
  Tang, C. W.; Vanslyke, S. A.; Chen, C. H. J. Appl. Phys. 1989, 65, 3610. doi: 10.1063/1.343409 doi: 10.1063/1.343409
3. [3]
  Burroughes, J. H.; Bradely, D. D. C.; Brown, A. R.; Marks, R. N.; Mackay, K.; Friend, R. H.; Burn, P. L.; Holmes, A. B. Nature 1990, 347, 539. doi: 10.1038/347539a0 doi: 10.1038/347539a0
4. [4]
  Lan, L. H.; Tao, T.; Li, M. L.; Gao, D. Y.; Zhou, J. H.; Xu, M.; Wang, L.; Peng, J. B. Acta Phys. -Chim. Sin. 2017, 33, 1548. doi: 10.3866/PKU.WHXB201704283
5. [5]
  Xiang, C.; Koo, W.; So, F.; Sasabe, H.; Kido, J. Light-Sci. Appl. 2013, 2, e74. doi: 10.1038/lsa.2013.30 doi: 10.1038/lsa.2013.30
6. [6]
  Xu, T.; Yang, M. J.; Liu, J.; Wu, X. K.; Murtaza, I.; He, G. F.; Meng, H. Org. Electron. 2016, 37, 93. doi.10.1016/j.orgel.2016.06.014 doi: 10.1016/j.orgel.2016.06.014
7. [7]
  Xu, T.; Zhang, Y. X.; Wang, B.; Huang, C. C.; Murtaza, I.; Meng, H.; Liao, L. S. ACS Appl. Mater. Interfaces 2017, 9, 2701. doi: 10.1021/acsami.6b13077 doi: 10.1021/acsami.6b13077
8. [8]
  Wu, T. L.; Yeh, C. H.; Hsiao, W. T.; Huang, P. Y.; Huang, M. J.; Chiang, Y. H.; Cheng, C. H.; Liu, R. S.; Chiu, P. W. ACS Appl. Mater. Interfaces 2017, 9, 14998. doi: 10.1021/acsami.7b03597 doi: 10.1021/acsami.7b03597
9. [9]
  D'Andrade, B. W.; Thompson, M. E.; Forrest, S. R. Adv. Mater. 2002, 14, 147. doi: 10.1002/1521-4095(20020116)14:2 < 147::aid-adma147 > 3.0.co; 2-3 doi: 10.1002/1521-4095(20020116)14:2<147::aid-adma147>3.0.co;2-3
10. [10]
  Gather, M. C.; K hnen, A.; Meerholz, K. Adv. Mater. 2011, 23, 233. doi: 10.1002/adma.201002636 doi: 10.1002/adma.201002636
11. [11]
  Huang, J.; Li, G.; Wu, E.; Xu, Q.; Yang, Y. Adv. Mater. 2006, 18, 114. doi: 10.1002/adma.200501105 doi: 10.1002/adma.200501105
12. [12]
  Gevaerts, V. S.; Furlan, A.; Wienk, M. M.; Turbiez, M.; Janssen, R. A. J. Adv. Mater. 2012, 24, 2130. doi: 10.1002/adma.201104939 doi: 10.1002/adma.201104939
13. [13]
  Small, C. E.; Tsang, S. W.; Kido, J.; So, S. K.; So, F. Adv. Funct. Mater. 2012, 22, 3261. doi: 10.1002/adfm.201200185 doi: 10.1002/adfm.201200185
14. [14]
  Zhu, Y. W.; Yuan, Z. C.; Cui, W.; Wu, Z. W.; Sun, Q. J.; Wang, S. D.; Kang, Z. H.; Sun, B. Q. J. Mater. Chem. A 2014, 2, 1436. doi: 10.1039/c3ta13762g doi: 10.1039/c3ta13762g
15. [15]
  Helander, M. G.; Wang, Z. B.; Qiu, J.; Greiner, M. T.; Puzzo, D. P.; Lu, Z. H. Science 2011, 332, 944. doi: 10.1126/science.1202992 doi: 10.1126/science.1202992
16. [16]
  Voroshazi, E.; Veneet, B.; Buri, A.; Muller, R.; Nuzzo, D. D.; Heremans, P. Org. Electron. 2011, 12, 736. doi: 10.1016/j.orgel.2011.01.025 doi: 10.1016/j.orgel.2011.01.025
17. [17]
  Jorgensen, M.; Norrman, K.; Kreb, F. C. Sol. Energy Mater. Sol. Cells 2008, 92, 686. doi: 10.1016/j.solmat.2008.01.005 doi: 10.1016/j.solmat.2008.01.005
18. [18]
  Kr ger, M.; Hamwi, S.; Meyer, J.; Riedl, T.; Kowalsky, W.; Kahn, A. Appl. Phys. Lett. 2009, 95, 123301. doi: 10.1063/1.3231928 doi: 10.1063/1.3231928
19. [19]
  Liu, J.; Wu, X. K.; Chen, S.; Shi, X. D.; Wang, J.; Huang, S. J.; Guo, X. J.; He, G. F. J. Mater. Chem. C 2014, 2, 158. doi: 10.1039/c3tc31580k doi: 10.1039/c3tc31580k
20. [20]
  Xu, H.; Zhou, X. J. Appl. Phys. 2013, 114, 244505. doi: 10.1063/1.4852835 doi: 10.1063/1.4852835
21. [21]
  Kim, C.; Nguyen, T. P.; Le, Q. V.; Jeon, J. M.; Jang, H. W.; Kim, S. Y. Adv. Funct. Mater. 2015, 25, 4512. doi: 10.1002/adfm.201501333 doi: 10.1002/adfm.201501333
22. [22]
  Wong, K. H.; Ananthanarayanan, K.; Luther, J.; Balaya, P. J. Phys. Chem. C 2012, 116, 16346. doi: 10.1021/jp303679y doi: 10.1021/jp303679y
23. [23]
  Murase, S.; Yang, Y. Adv. Mater. 2012, 24, 2459. doi: 10.1002/adma.201104771 doi: 10.1002/adma.201104771
24. [24]
  Hammond, S. R.; Meyer, J.; Widjonarko, N. E.; Ndione, P. F.; Sigdel, A. K.; Garcia, A.; Miedaner, A.; Lloyd, M. T.; Kahn, A.; Ginley, D. S.; et al. J. Mater. Chem. 2012, 22, 3249. doi: 10.1039/c2jm14911g doi: 10.1039/c2jm14911g
25. [25]
  Irfan, I.; Turinske, A. J.; Bao, Z.; Gao, Y. Appl. Phys. Lett. 2012, 101, 093305. doi: 10.1063/1.4748978 doi: 10.1063/1.4748978
26. [26]
  Meyer, J.; Zilberberg, K.; Riedl, T.; Kahn, A. J. Appl. Phys. 2011, 110, 033710. doi: 10.1063/1.3611392 doi: 10.1063/1.3611392
27. [27]
  Zilberberg, K.; Trost, S.; Schmidt, H.; Riedl, T. Adv. Energy Mater. 2011, 1, 377. doi: 10.1002/aenm.201100076 doi: 10.1002/aenm.201100076
28. [28]
  Zilberberg, K.; Trost, S.; Meyer, J.; Kahn, A.; Behrendt, A.; Hecht, D. L.; Frahm, R.; Riedl, T. Adv. Funct. Mater. 2011, 21, 4776. doi: 10.1002/adfm.201101402 doi: 10.1002/adfm.201101402
29. [29]
  Hancox, I.; Rochford, L. A.; Clare, D.; Walker, M.; Mudd, J. J.; Sullivan, P.; Schumann. S.; McConville, C. F.; Jones, T. S. J. Phys. Chem. C 2013, 117, 49. doi: 10.1021/jp3075767 doi: 10.1021/jp3075767
30. [30]
  Ratcliff, E. L.; Meyer, J.; Steirer, K. X.; Garcia, A.; Berry, J. J.; Ginley, D. S.; Olson, D. C.; Kahn, A.; Armstrong, N. R. Chem. Mater. 2011, 23, 4988. doi: 10.1021/cm202296p doi: 10.1021/cm202296p
31. [31]
  Liu, S.; Liu, R.; Chen, Y.; Ho, S.; Kim, J. H.; So, F. Chem. Mater. 2014, 26, 4528. doi: 10.1021/cm501898y doi: 10.1021/cm501898y
32. [32]
  Meyer, J.; Khalandovsky, R.; G rrn, P.; Kahn, A. Adv. Mater. 2011, 23, 70. doi: 10.1002/adma.201003065 doi: 10.1002/adma.201003065
33. [33]
  Sarma, D. D.; Rao, C. N. R. J. Electron. Spectrosc. Relat. Phenom. 1980, 20, 25. doi: 10.1016/0368-2048(80)85003-1 doi: 10.1016/0368-2048(80)85003-1
34. [34]
  Kanai, K.; Koizumi, K.; Ouchi, S.; Tsukamoto, Y.; Sakanoue, K.; Ouchi, Y.; Seki, K. Org. Electron. 2010, 11, 188. doi: 10.1016/j.orgel.2009.10.013 doi: 10.1016/j.orgel.2009.10.013
35. [35]
  Lee, H.; Cho, S. W.; Han, K.; Jeon, P. E.; Whang, C. N.; Jeong, K, Cho, K.; Yi, Y. Appl. Phys. Lett. 2008, 93, 43308. doi: 10.1063/1.2965120 doi: 10.1063/1.2965120
36. [36]
  Murgatroyd, P. N. J. Phys. D: Appl. Phys. 1970, 3, 151. doi: 10.1088/0022-3727/3/2/308 doi: 10.1088/0022-3727/3/2/308
37. [37]
  Cai, M.; Xiao, T.; Hellerich, E.; Chen, Y.; Shinar, R.; Shinar, J. Adv. Mater. 2011, 23, 3590. doi: 10.1002/adma.201101154 doi: 10.1002/adma.201101154
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Improved Hole Injection Property of Solution-Processed MoO3 with

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Improved Hole Injection Property of Solution-Processed MoO₃ with