Abstract:
PURPOSE: A CMOS transistor using Ge condensation and a manufacturing method thereof are provided to easily manufacture a CMOS transistor by dividing a p-channel and an n-channel on a silicon wafer through Ge condensation. CONSTITUTION: A CMOS transistor(100) using Ge condensation includes an insulation layer(112), a silicon layer, a first gate insulation layer(124), a first gate(125), a second gate insulation layer(144), and a second gate(145). The silicon layer is formed on the insulation layer, and is divided into a p-MOS transistor region and an n-MOS transistor region. The first gate insulation layer and the first gate are formed on a channel region of the p-MOS transistor region. The second gate insulation layer and the second gate are formed on a channel region of the n-MOS transistor region.
Abstract:
A photoelectric device is provided to increase the energy conversion efficiency by varying the composition of a plurality of light absorption layers. A photoelectric device includes a light absorption layer(200) and the first and second electrodes(E1,E2) which are electrically connected to the light absorption layer. The light absorption layer comprises GaInNAsP. The light absorption layer is formed on a silicon layer. The light absorption layer is a monolayer or multilayer consisting of GaInNAsP.
Abstract:
A vertical external cavity surface emitting laser device and a laser system including the same are provided to realize a compact volume and reduce a manufacturing unit cost. A vertical external cavity surface emitting laser device(20) includes a first laser device(30), a second laser device(50), and a heat spreader(40). The first and second laser devices(30,50) generate light of different wavelengths. The first laser device(30) has a first active layer(31) and a first reflector(35). The first active layer(31) generates light of a first wavelength. The first reflector(35) reflects the light generated from the first active layer(31). The second laser device(50) has a second active layer(51) and a second reflector(55). The second active layer(51) generates light of a second wavelength. The second reflector(55) reflects the light generated from the second active layer(51). The heat spreader(40) discharges heat generated from the first and second laser devices(30,50) to the outside. The first active layer(31), the first reflector(35), the heat spreader(40), the second active layer(51), and the second reflector(55) are sequentially formed in a stack structure.
Abstract:
A rear-light-pumping VECSEL(Vertical External Cavity Surface Emitting Laser) is provided to prevent deterioration of stability of an entire laser system by absorbing a remaining pump beam to other optical element inside a cavity. A rear-light-pumping VECSEL(20) includes a laser chip(22), a pump laser(21), a beam splitter(26), a pump beam mirror(27), and an external mirror(25). The laser chip(22) has an oscillation area generating a laser beam. The pump laser(21) provides a pump beam to a lower surface of the laser chip(22). The beam splitter(26) transmits the laser beam generated from the laser chip(22) and reflects the pump beam generated from the pump laser(21). The pump mirror(27) directs the pump beam to the laser chip(22) through the beam splitter(26) by reflecting the pump beam again. The external mirror(25) directs the laser beam to the laser chip(22) through the beam splitter(26) by reflecting the laser beam again.
Abstract:
저결함 반도체 소자 및 그 제조 방법이 개시된다. 개시된 반도체 소자의 제조 방법은, 실리콘 기판 상에 버퍼층을 형성하고, 상기 버퍼층 상에 제1성장 조건을 가지고 계면 조절층을 형성하고, 상기 계면 조절층 상에 상기 제1 성장 조건과 다른 제2 성장 조건을 가지고 질화물 적층체를 형성한다.