A μc-Si:H P-I-N Imager For 2-D Pattern Recognition

• DOI: 10.1557/proc-558-237
• Publication Date: 2011-04-05T12:50:31Z
• Authors: J. Martins; M. Fernandes; F. Sousa; P. Louro; A. MaçArico; M. Vieira
• Keywords: 0103 physical sciences; 01 natural sciences

ABSTRACTA TCO/ μc-p-i-n Si:H/AI imager is presented and analyzed. The μc-p-i-n Si:H photodiode acts as a sensing element. Contacts are used as an electrical interface. The image is acquired by a scan-out process. Sampling is performed on a rectangular grid, and the read-out of the photogenerated charges is achieved by measuring simultaneously both transverse photovoltages at the coplanar electrodes. The image representation in gray-tones is obtained by using low level processing algorithms. Basic image processing algorithms are developed for image enhancement and restoration.