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Dynamic range improvement by narrow-channel effect suppression and smear reduction technologies in small pixel IT-CCD image sensors

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14 Author(s)
Tanabe, A. ; Silicon Syst. Res. Lab., NEC Corp., Kanagawa, Japan ; Kudoh, Y. ; Kawakami, Y. ; Masubuchi, I.
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Technologies for narrow-channel effect suppression in photodiodes (PDs) and vertical CCDs (V-CCDs) and for smear reduction in PDs have been developed in order to improve dynamic range in small pixel interline-transfer CCD (IT-CCD) image sensors. The new technologies have been applied to a progressive-scan IT-CCD image sensor with 5 μm square pixels and have (1) increased the charge handling capability of its V-CCDs to 4500 electrons/V; (2) improved its smear value to -95 dB; and (3) increased the saturation charge of its PDs to 2.3×104 electrons

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Electron Devices, IEEE Transactions on  (Volume:47 ,  Issue: 9 )