Patent ID: 8298857
Filing Date: 2012-10-30
Classification: H01L

Abstract:
1. A method for forming a negative feedback avalanche photodetector comprising: forming a first avalanche photodiode comprising a first doped region having a first perimeter, wherein the first avalanche photodiode is dimensioned and arranged to produce an electrical signal in response to absorption of a photon having a wavelength greater than 1000 nm; and forming a first thin-film resistor having a first terminal and a second terminal, wherein the first thin-film resistor and the first avalanche photodiode are monolithically integrated, and wherein the first thin-film resistor is disposed above the first doped region such that it is located completely within the first perimeter, and wherein the first terminal and the first doped region are electrically connected, and further wherein the first thin-film resistor is formed by operations comprising;