公开(公告)号：US20100319777A1

公开(公告)日：2010-12-23

申请号：US12604450

申请日：2009-10-23

Applicant: Sung-Bum BAE ,  Yong-Duck Chung ,  Won Seok Han ,  Dae-Hyung Cho ,  Je Ha Kim

Inventor： Sung-Bum BAE ,  Yong-Duck Chung ,  Won Seok Han ,  Dae-Hyung Cho ,  Je Ha Kim

IPC: H01L31/0232 ,  H01L31/18

CPC classification number: H01L31/0322 ,  H01L31/0392 ,  H01L31/03923 ,  H01L31/03925 ,  H01L31/072 ,  Y02E10/52 ,  Y02E10/541 ,  Y02P70/521

Abstract: A solar cell and method of fabricating the same are provided. The solar cell includes a metal electrode layer, an optical absorption layer, a buffer layer, and a transparent electrode layer. The metal electrode layer is disposed on a substrate. The optical absorption layer is disposed on the metal electrode layer. The buffer layer is disposed on the optical absorption layer and includes an indium gallium nitride (InxGa1-xN). The transparent electrode layer is disposed on the buffer layer.

Abstract translation: 提供了一种太阳能电池及其制造方法。 太阳能电池包括金属电极层，光吸收层，缓冲层和透明电极层。 金属电极层设置在基板上。 光吸收层设置在金属电极层上。 缓冲层设置在光吸收层上并包括氮化铟镓（In x Ga 1-x N）。 透明电极层设置在缓冲层上。

公开(公告)号：US07298933B2

公开(公告)日：2007-11-20

申请号：US11148906

申请日：2005-06-09

Applicant: Kwang Seong Choi ,  Jong Hyun Lee ,  Yong Duck Chung ,  Young Shik Kang ,  Jong Tae Moon ,  Je Ha Kim

Inventor： Kwang Seong Choi ,  Jong Hyun Lee ,  Yong Duck Chung ,  Young Shik Kang ,  Jong Tae Moon ,  Je Ha Kim

IPC: G02F1/01 ,  G02F1/35

CPC classification number: G02F1/0356

Abstract: Provided is an optical module including a microstrip line, a traveling wave type optical device positioned in the end of the microstrip line, and at least one balanced open stub connected to the microstrip line for the impedance matching at a specific frequency such as 40 GHz and 60 GHz. For the fine tuning, laser trimming can be applied to the stub. A transition region is formed between the optical device and the microstrip line. A termination resistor is formed to face the microstrip line with the optical device therebetween. A bandwidth can be controlled at a specific frequency by adjusting a number of the stubs or a value of the termination resistor.

Abstract translation: 提供了一种光学模块，其包括微带线，位于微带线的端部的行波型光学器件和连接到微带线的至少一个平衡的开路短路，用于在特定频率例如40GHz的阻抗匹配，以及 60 GHz。 对于微调，激光修剪可以应用于存根。 在光学器件和微带线之间形成过渡区域。 形成终端电阻器，以便在其间具有光学器件来面对微带线。 可以通过调整短路的数量或终端电阻的值来控制带宽在特定频率。

公开(公告)号：US06985273B2

公开(公告)日：2006-01-10

申请号：US10743463

申请日：2003-12-23

Applicant: Young Shik Kang ,  Je Ha Kim ,  Ji Youn Lim ,  Sung Bock Kim

Inventor： Young Shik Kang ,  Je Ha Kim ,  Ji Youn Lim ,  Sung Bock Kim

IPC: G02F

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F2001/0175

Abstract: Disclosed is an electro-absorption optical modulator using a semiconductor device. The optical modulator makes use of a change in light absorption caused by displacement of an absorption curve depending on a bias voltage applied to the device. Here, a level of the light absorption depending on the bias voltage is expressed as a transfer function of output light to the applied bias, and the transfer function has a non-linear profile due to a characteristic of a material. Unlike signal modulation of a digital optical communication system, an analog optical transmission system can be subjected to deterioration in performance, because the non-linear characteristic of the transfer function for the optical modulator generates signal distortion when an electrical signal is converted into an optical signal. The typical optical modulator has an absorption layer constituted of quantum wells having the same width. However, the inventive optical modulator has the absorption layer formed by the combination of quantum wells having a width different form each other, thus having excellent linearity.

Abstract translation: 公开了使用半导体器件的电吸收光调制器。 光调制器利用由施加到器件的偏置电压引起的吸收曲线位移引起的光吸收变化。 这里，根据偏置电压的光吸收水平被表示为输出光到施加偏压的传递函数，并且传递函数由于材料的特性而具有非线性轮廓。 与数字光通信系统的信号调制不同，模拟光传输系统由于光调制器的传递函数的非线性特性在将电信号转换成光信号时会产生信号失真 。 典型的光调制器具有由具有相同宽度的量子阱构成的吸收层。 然而，本发明的光调制器具有通过量子阱的组合形成的吸收层，该量子阱具有彼此不同的宽度，因此具有优异的线性。