2D Like Photonic Crystal Using In2O3-SiOx Heterostructure Nanocolumn Arrays and Humidity Sensing

다국어 초록 (Multilingual Abstract)

2D like photonic crystal was fabricated with the help of GLAD synthesized In2O3-SiOx heterostructure nanocolumnar arrays. Different dielectric media like air and water were used to demonstrate the optical characteristics and band gap of the crystal. Nearly 33 nm red shift of the band gap was observed for wet sample as compared to dry. Broad band UV-Vis absorption has been observed for the dry In2O3-SiOx heterostructure nanocolumnar arrays, which decreases in wet condition. The device shows low current conduction at lower humidity, which enhances at higher humidity condition due to the absorption of water molecules from the environment by the porous surface. The device possesses 5.6 × 10−3 mA/cm2 current at 10%, which increases to 1.4 × 10−1 mA/cm2 at 99% humidity under applied potential of 2 V. The sample shows the color alteration from black (dry) to brown (wet) due to changes in its effective refractive index.

참고문헌 (Reference)

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