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6 June 1997 Avalance photodetectors with an electrically isolated guard ring
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A 2D finite difference method is employed to demonstrate the effectiveness of the use of guard rings in reducing surface electric field along the semiconductor/insulator interface of planar avalanche photodetectors (APDs). Results from our modeling indicate a 20 percent edge field reduction in doubly-diffused devices as compared to singly-diffused p+n- junctions. The introduction of guard rings and double diffusion process is shown to provide an extra degree-of-freedom in the design of APDs, thus improved device characteristics against breakdown fields.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Babatunde Odubanjo, Chen-Show Wang, and Wen I. Wang "Avalance photodetectors with an electrically isolated guard ring", Proc. SPIE 2994, Physics and Simulation of Optoelectronic Devices V, (6 June 1997);

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