Skip to main content Accessibility help
×
Home

Improved Resolution in A P-I-N Image Sensor by Changing the Structure of the Doped Layers

  • M. Vieira (a1), M. Fernandes (a1), J. Martins (a1), P. Louro (a1), A. Maçarico (a1), R. Schwarz (a1) and M. Schubert (a2)...

Abstract

An amorphous ZnO/p-i-n/Al imager that uses a small-signal scanning beam to read out the short circuit current signal is presented. An analysis of the image geometric distortion, restoration, and enhancement is performed. A simple image-processing algorithm is used to recover main features of projected images. Modifications of the transducer structure are proposed for improving the sensor performance.The effect of the doped layers and image intensity on the sensor output characteristics are analysed. Results show that a trade-off between the sensor structure and contact geometry is needed for a correct read-out. Algorithms and tools are proposed for image analysis.

Copyright

References

Hide All
[1] Torkel, J., Wallmark, Proc. IRE 43 (1956) 474.
[2] Chen, I., J. Appl. Phys. 64 (1988) 2224.
[3] Fortunato, E., Vieira, M., Lavareda, G., Ferreira, L., and Martins, R., J. of Non-Crystalline Solids 164–166 (1993) 797.
[4] Vieira, M., Appl. Phys. Lett. 70 (1997) 220.
[5] Vieira, M., Fantoni, A., Koynov, S., and Schwarz, R., Thin Solid Films 296 (1997) 164.
[6] Vieira, M., Maçarico, A., Morgado, E., and Schwarz, R., J. of Non-Crystalline Solids 227 (1998) 1311.
[7] Chakrabarti, S., Siegmund, O. H. W., Hecht, J., Proc. SPIE 834 (1987) 222.
[8] Henke, L. B., Liesegang, J., Smith, S. D., Phys. Rev. 19 (1979) 3004.
[9] Sousa, F., Martins, J., Fernandes, M., A. Maçarico, Schwarz, R., and Vieira, M.,, J. of Non-Crystalline Solids (2000).
[10] Koch, C., Ito, M., Schubert, M., and Werner, J. H., Mat. Res. Soc. Symp. Proc. 557 (1999) 749.
[11] Martins, J., Sousa, F., Fernandes, M., A. Maçarico, Louro, P., and Vieira, M., European Mat. Material Science and Engineering B69–70 (2000) 494.
[12] D. Noorlag, J. W., PhD thesis, Delft University of Technology (1982).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed