The origin of the high work function of chlorinated indium tin oxide

NPG Asia Materials

Volumn 5, Issue 8, 2013, Pages

  Huang, Peng Ru ^a   He, Yao ^a   Cao, Chao ^b   Lu, Zheng Hong ^a,c  

^a YUNNAN UNIVERSITY   (China)

^b HANGZHOU NORMAL UNIVERSITY   (China)

^c UNIVERSITY OF TORONTO   (Canada)

Author keywords

Charge transfer; Chlorination; Indium tin oxide; Work function

Indexed keywords

ATOMIC SIZES; ELECTROCHEMICAL POTENTIAL; HIGH WORK FUNCTION; INDIUM TIN OXIDE; SURFACE DIPOLE;

CHARGE TRANSFER; CHEMICAL BONDS; CHLORINATION; ELECTRONEGATIVITY; TIN; WORK FUNCTION;

FLUORINE;

EID: 84884219252     PISSN: 18844049     EISSN: 18844057     Source Type: Journal    
DOI: 10.1038/am.2013.33     Document Type: Article

References (36)

1. 2 films. Nature 353, 737-740 (1991).
2. Gibson, E. A., Smeigh, A. L., Le Pleux, L., Fortage, J., Boschloo, G., Blart, E., Pellegrin, Y., Hagfeldt, A. & Hammarström, L. A p-type NiO-based dye-sensitized solar cell with an open-circuit voltage of 0.35 V. Angew Chem. 121, 4466-4469 (2009).
3. Nattestad, A., Mozer, A. J., Fischer, M. K., Cheng, Y. B., Mishra, A., Bäuerle, P. & Bach, U. Highly efficient photocathodes for dye-sensitized tandem solar cells. Nat. Mater. 9, 31-35 (2009).
4. Kabra, D., Lu, L. P., Song, M. H., Snaith, H. J. & Friend, R. H. Efficient single-layer polymer light-emitting diodes. Adv. Mater. 22, 3194-3198 (2010).
5. 3 films spin-coated from a nanoparticle suspension for efficient hole-injection in organic electronics. Adv. Mater. 23, 70-73 (2011).
6. Qiu, C., Xie, Z., Chen, H., Wong, M. & Kwok, H. S. Comparative study of metal or oxide capped indium-tin oxide anodes for organic light-emitting diodes. J. Appl. Phys. 93, 3253-3258 (2003).
7. Roy, S. C., Varghese, O. K., Paulose, M. & Grimes, C. A. Toward solar fuels: photocatalytic conversion of carbon dioxide to hydrocarbons. ACS Nano. 4, 1259-1278 (2010).
8. 2O using nonstoichiometric ceria. Science 330, 1797-1801 (2010).
9. 2 and water vapor to hydrocarbon fuels. Nano Lett. 9, 731-737 (2009).
10. Kido, J., Kimura, M. & Nagai, K. Multilayer white light-emitting organic electroluminescent device. Science 267, 1332-1334 (1995).
11. Shen, Z., Burrows, P. E., Bulović, V., Forrest, S. R. & Thompson, M. E. Three-color, tunable, organic light-emitting devices. Science 276, 2009-2011 (1997).
12. Friend, R. H., Gymer, R. W., Holmes, A. B., Burroughes, J. H., Marks, R. N., Taliani, C., Bradley, D. D. C., Dos Santos, D. A., Brédas, J. L., Lögdlund, M. & Salaneck, W. R. Electroluminescence in conjugated polymers. Nature 397, 121-128 (1999).
13. Baldo, M. A., Thompson, M. E. & Forrest, S. R. High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer. Nature 403, 750-753 (2000).
14. Helander, M. G., Wang, Z. B., Qiu, J., Greiner, M. T., Puzzo, D. P., Liu, Z. W. & Lu, Z. H. Chlorinated indium tin oxide electrodes with high work function for organic device compatibility. Science 332, 944-947 (2011).
15. Aziz, H., Popovic, Z. D., Hu, N. X., Hor, A. M. & Xu, G. Degradation mechanism of small molecule-based organic light-emitting devices. Science 283, 1900-1902 (1999).
16. Wang, Z. B., Helander, M. G., Qiu, J., Liu, Z. W., Greiner, M. T. & Lu, Z. H. Direct hole injection in to 4, 40-N, N'-dicarbazole-biphenyl: a simple pathway to achieve efficient organic light emitting diodes. J. Appl. Phys. 108, 024510-024510 (2010).
17. Sun, K. & Ouyang, J. Polymer solar cells using chlorinated indium tin oxide electrodes with high work function as the anode. Sol. Energy Mat. Sol. Cells 96, 238-243 (2012).
18. Zheng, S. & Wong, K. Y. Enhanced performance in polymer solar cells by the use of a halogenated indium tin oxide anode. Appl. Phys. Lett. 102, 053302-053302 (2013).
19. Zhao, Y., Duan, L., Zhang, D., Qiao, J., Wang, L. & Qiu, Y. Performance enhancement of organic light-emitting diodes by chlorinated indium tin oxide in the presence of hydrogen peroxide. Org. Electron 14, 882-887 (2013).
20. Xu, Z. Q., Li, J., Yang, J. P., Cheng, P. P., Zhao, J., Lee, S. T. & Tang, J. X. Enhanced performance in polymer photovoltaic cells with chloroform treated indium tin oxide anode modification. Appl. Phys. Lett. 98, 253303 (2011).
21. Cao, X. A. & Zhang, Y. Q. Performance enhancement of organic light-emitting diodes by chlorine plasma treatment of indium tin oxide. Appl. Phys. Lett. 100, 183304-183304 (2012).
22. 2 plasma-etched indium tin oxide anode. J. Appl. Phys. 112, 013103-013103 (2012).
23. Gao, C. H., Cai, S. D., Gu, W., Zhou, D. Y., Wang, Z. K. & Liao, L. S. Enhanced hole injection in phosphorescent organic light-emitting diodes by thermally evaporating a thin indium trichloride layer. ACS Appl. Mat. Inter. 4, 5211-5216 (2012).
24. Kresse, G. & Furthmüller, J. Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set. Comput. Mater. Sci. 6, 15-50 (1996).
25. Kresse, G. & Furthmüller, J. Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set. Phys. Rev. B 54, 11169 (1996).
26. Blöchl, P. E. Projector augmented-wave method. Phys. Rev. B 50, 17953 (1994).
27. Kresse, G. & Joubert, D. From ultrasoft pseudopotentials to the projector augmentedwave method. Phys. Rev. B 59, 1758 (1999).
28. Perdew, J. P., Burke, K. & Ernzerhof, M. Generalized gradient approximation made simple. Phys. Rev. Lett. 77, 3865-3868 (1996).
29. 3 at two wavelengths. Acta Cryst. 20, 723-728 (1966).
30. 3 by hard X-ray photoemission spectroscopy. Phys. Rev. B 81, 165207. (2010).
31. Milliron, D. J., Hill, I. G., Shen, C., Kahn, A. & Schwartz, J. Surface oxidation activates indium tin oxide for hole injection. J. Appl. Phys. 87, 572-576 (2000).
32. Kim, K. P., Hussain, A. M., Hwang, D. K., Woo, S. H., Lyu, H. K., Baek, S. H., Jang, Y. & Kim, J. H. Work function modification of indium-tin oxide by surface plasma treatments using different gases. Jpn J. Appl. Phys. 48, 1601 (2009).
33. Sun, X. H., Cheng, L. F., Liu, M. W., Liao, L. S., Wong, N. B., Lee, C. S. & Lee, S. T. Photoelectron spectroscopic study of iodine-and bromine-treated indium tin oxides and their interfaces with organic films. Chem. Phys. Lett. 370, 425-430 (2003).
34. Helander, M. G., Greiner, M. T., Wang, Z. B., Tang, W. M. & Lu, Z. H. Work function of fluorine doped tin oxide. J. Vac. Sci. Technol. A 29, 011019-011019 (2011).
35. Huheey, J. E., Keiter, E. A., Keiter, R. L. & Medhi, O. K. Inorganic Chemistry: Principles of Structure and Reactivity. 4th Edn (Harper Collins, New York, 1993).
36. Henkelman, G., Arnaldsson, A. & Jónsson, H. A fast and robust algorithm for Bader decomposition of charge density. Comput. Mater. Sci. 36, 354-360 (2006).