Ray, Debdutta ; Patankar, Meghan P. ; Periasamy, N. ; Narasimhan, K. L. (2005) Measurement of built-in voltage of organic semiconductor devices Synthetic Metals, 115 (2). pp. 349-351. ISSN 0379-6779
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.synthmet.2005.09.011
Abstract
The built-in voltage in organic semiconductors is usually measured by electroabsorption measurements. In this paper, we show that for tris-(8-hydroxy quinolato)aluminium (Alq) devices, modulated photocurrent spectroscopy provides a simple viable alternative to measuring the built-in voltage. This is possible because the quantum efficiency for photoconductivity in Alq is independent of the electric field. We also examine the limitations of modulated photocurrent spectroscopy in obtaining the built-in electric field.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Photoconductivity; Organic Semiconductors Based on Conjugated Molecule; Metal; Semiconductor Interfaces; Schottky Barrier; Detectors |
| ID Code: | 81731 |
| Deposited On: | 07 Feb 2012 11:08 |
| Last Modified: | 07 Feb 2012 11:08 |
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