Globalfoundries Singapore Pte. Ltd.

Cancan Wu

Eng Huat Toh

Kiok Boone Elgin Quek

Shyue Seng Tan

Xinshu Cai

Khee Yong Lim

Yongshun Sun

Ping Zheng

Thanh Hoa Phung

A structure includes a photodetector including alternating p-type semiconductor layers and n-type semiconductor layers in contact with each other in a stack. Each semiconductor layer includes an extension extending beyond an end of an adjacent semiconductor layer of the alternating p-type semiconductor layers and n-type semiconductor layers. The extensions provide an area for operative coupling to a contact. The extensions can be arranged in a cascading, staircase arrangement, or may extend from n-type semiconductor layers on one side of the stack and from p-type semiconductor layers on another side of the stack. The photodetector can be on a substrate in a first region, and a complementary metal-oxide semiconductor (CMOS) device may be on the substrate on a second region separated from the first region by a trench isolation. The photodetector is capable of detecting and converting near-infrared (NIR) light, e.g., having wavelengths of greater than 0.75 micrometers.

Multi-semiconductor layer photodetector and related method

The present disclosure generally relates to semiconductor devices for use in optoelectronic/photonic applications and integrated circuit (IC) chips. More particularly, the present disclosure relates to photodiodes such as avalanche photodiodes (APDs) and single photon avalanche diodes (SPADs).

Photodiodes with serpentine shaped electrical junction

Growing community of inventors

Singapore, Singapore

Cancan Wu