- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Study of optical and structural properties of sputtered aluminum nitride films with controlled oxygen content to fabricate Distributed Bragg Reflectors for ultraviolet A
摘要： Aluminum nitride (AlN) films with controlled oxygen content were deposited on silicon substrates, and optical properties studied with dependency on film morphology. Combinations of argon (Ar) and nitrogen (N2) gases were used in RF magnetron sputtering of an AlN target. The resulting refractive index ranging from 1.6 to 2.0 at 400 nm was tuned by controlling the sputter gas flow rate ratio of Ar and N2. The resulting refractive index is associated with density and aluminum nitride content of the thin films. Distributed Bragg Reflectors (DBRs) optimized for ultraviolet-A reflectivity were fabricated with pairs of alternating AlN thin films using an explicit combination of low-n and high-n to further investigate the thin film optical properties. The effect of structural transformation in the DBR stack on the progress of optical properties was studied. The DBRs exhibit a negligible extinction coefficient, utilizing precise control of oxygen incorporation with one sputtering target.
关键词： Optical properties,Materials interface,Aluminum oxynitride,Aluminum nitride,AlN,Refractive index,DBR,Magnetron sputtering
更新于2025-09-16 10:30:52
-
Core/shell-structured TiO2/PbS photoanodes for high-performance CsPbBr3 perovskite solar cells
摘要： PbS colloidal quantum dots (CQDs) were used as sensitizers to modify the mesoporous TiO2 (m-TiO2) layer/CsPbBr3 perovskite interface in solar cells by controlling the various spin-coating cycles on the surface of m-TiO2. The visible light absorption of m-TiO2 was enhanced because of the PbS CQDs. The prominent power conversion efficiency (PCE) of 5.04% for the core/shell-structured TiO2/PbS photoanode was higher than that of the pristine device (2.45%). This investigation provides a basis for the effect of CQD sensitization of the functional interfaces on the performance of perovskite solar cells (PSCs) under ambient conditions.
关键词： Thin films,Deposition,Composite materials,Interface
更新于2025-09-11 14:15:04