• Journal of the Korean Vacuum Society
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• v.3 no.2
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• pp.203-206
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• 1994

동시증착법으로 성장한 CuIn3Se5 박막의 구조 및 광학적 특성을 XRD, SEM 광투과 및 광반사 측정으로부터 조사하였다. XRD 측정에 의하면 CuIn3Se5 는 정열된 Cu 빈자리와 Cuqls자리에 in으로 대 치되는 defect chalcopyrite 구조임이 확인디었다. 또한 광흡수 측정으로부터 CuIn3Se5 는 금지대내에서 직접 전이에 의한 광흡수 특성을 보여주며 이때 에너지띠 간격은 1.27ev 이었다. CuIn3Se5 박막에 대한 연구결과들은 CuInSe2 의 결과들과 비교하여 논의하였다.

• Journal of the Korea Convergence Society
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• v.12 no.2
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• pp.29-34
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• 2021

In this paper, a cylindrical photonic crystal waveguide with a low-index core is first proposed. The core can be filled with air, liquid, or arbitrary dielectric materials. Exact analyses for the electromagnetic field characteristics of guided modes, by using appropriate Bessel functions and applying the boundary conditions, are performed to find out the guiding characteristics of the proposed waveguide. For verification and usage in design and manufacturing process, the computer-calculation of the waveguide transmission characteristics is also performed by applying the rigorous full-vectorial finite difference method. Providing variations of the effective area for the fundamental mode of the designed waveguide with different numbers of cladding layers, ranging from 2.6056 ㎛2 to 5.9673 ㎛2 over the operation wavelength, generally as the core refractive index n1 is higher, the mode area becomes smaller and the result leads to more optimistic effect for nonlinear device applications.