Epistar Corporation

Jung-Jen Li

Meng-Yang Chen

Hsin-Kang Chen

The present disclosure provides a semiconductor stack, a semiconductor device and a method for manufacturing the same. The semiconductor device includes a first semiconductor layer and a light-emitting structure. The first semiconductor layer includes a first III-V semiconductor material, a first dopant, and a second dopant. The light-emitting structure is on the first semiconductor layer and includes an active structure. In the first semiconductor layer, a concentration of the second dopant is higher than a concentration of the first dopant. The first dopant is carbon, and the second dopant is hydrogen.

Semiconductor stack, semiconductor device and method for manufacturing the same

A semiconductor device includes a semiconductor stack having a first-type semiconductor structure, an active structure, and a second-type semiconductor structure disposed on the first-type semiconductor structure. The second-type semiconductor structure has a doping concentration. A first portion includes a part of the first-type semiconductor structure, the active structure, and the second-type semiconductor structure, and has a current confining region. A second portion includes a part of the first-type semiconductor structure, the active structure, and the second-type semiconductor structure, and includes a first-type heavily doped region in the second-type semiconductor structure. The first-type heavily doped region includes a doping concentration higher than that of the second-type semiconductor structure.

Semiconductor device

A semiconductor device includes a first type semiconductor structure, an active structure, and a contact layer. The first type semiconductor structure includes a first lattice constant, a first side and a second side opposite to the first side. The active structure is on the first side of the first type semiconductor structure and emits a radiation, and the radiation has a peak wavelength between 1000 nm and 2000 nm. The contact layer is on the second side of the first type semiconductor structure and includes a second lattice constant. A difference between the first lattice constant and the second lattice constant is at least 0.5%.

The present disclosure provides a semiconductor device which includes a base layer and a buffer structure. The base layer includes a first semiconductor compound having a first lattice constant and including a plurality of elements, and an atomic radius of one of the plurality of elements which has the largest atomic radius is defined as a first atomic radius. The buffer structure includes a second semiconductor compound and a first additive. The second semiconductor compound has a second lattice constant and the first additive has a second atomic radius. The second lattice constant is larger than the first lattice constant, and the second atomic radius is larger than the first atomic radius.

Growing community of inventors

Hsinchu, Taiwan

Jung-Jen Li