On optimal structure and geometry of high-speed integrated photodiodes in a standard cmos technology

Abstract
Analyses of the influence of different geometries (layouts) and structures of high-speed CMOS photodiodes on their intrinsic (physical) and electrical bandwidths are presented. Three photodiode structures are studied: nwell/p-substrate, p+/nwell/p-substrate and p+/nwell. According to the author's knowledge, this is a first time that the influence of various structures and geometries (layouts) of CMOS photodiodes on their bandwidth is analytically analysed

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