A photoelectron spectroscopy study on the indium tin oxide treatment by acids and bases
- 8 February 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (6) , 880-882
- https://doi.org/10.1063/1.123397
Abstract
We report on the chemical adsorption of acids and bases on indium tin oxide (ITO). Ultraviolet photoelectron spectroscopy was used to measure the work function of the treated ITO and atomic surface concentrations were determined by x-ray photoelectron spectroscopy. The acid treatments yield work-function shifts as high as 0.7 eV compared to the nontreated ITO. Huge shifts in the work function are also obtained for the treatments with bases and are opposite to those obtained with the acids. These dramatic shifts are indicative of a double ionic surface layer. The importance of an appropriate plasma treatment prior to the chemical adsorption of acids or bases is discussed in terms of surface acido-basicity.Keywords
This publication has 11 references indexed in Scilit:
- Chemical potential shifts at organic device electrodes induced by grafted monolayersChemical Physics Letters, 1998
- Protonated metal-oxide electrodes for organic light emitting diodesChemical Physics Letters, 1998
- Surface modification of indium tin oxide by plasma treatment: An effective method to improve the efficiency, brightness, and reliability of organic light emitting devicesApplied Physics Letters, 1997
- Derivatized electrodes in the construction of organic light emitting diodesAdvanced Materials, 1997
- Work function of indium tin oxide transparent conductor measured by photoelectron spectroscopyApplied Physics Letters, 1996
- Carrier tunneling and device characteristics in polymer light-emitting diodesJournal of Applied Physics, 1994
- Efficient light-emitting diodes based on polymers with high electron affinitiesNature, 1993
- Studies on Evaporated Indium Tin Oxide (ITO)/Silicon Junctions and an Estimation of ITO Work FunctionJournal of the Electrochemical Society, 1991
- Organic electroluminescent diodesApplied Physics Letters, 1987
- The operation of the semiconductor-insulator-semiconductor solar cell: ExperimentJournal of Applied Physics, 1979