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AuAg bimetallic nonalloyed nanoparticles on a periodically nanostructured GaAs substrate for enhancing light trapping

机译:周期性纳米结构的GaAs衬底上的AuAg双金属非合金纳米颗粒,用于增强光捕获

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We present a light trapping structure consisting of AuAg bimetallic nonalloyed nanoparticles (BNNPs) on coneshaped GaAs subwavelength structures (SWSs), combining the advantages of plasmonic structures and SWSs for GaAs-based solar cell applications. To obtain efficient light trapping in solar cells, the optical properties' dependence on the size and composition of the Ag and Au metal nanoparticles was systematically investigated. Cone-shaped GaAs SWSs with AuAg BNNPs formed from an Au film of 12 nm and an Ag film of 10 nm exhibited the extremely low average reflectance (R-avg) of 2.43% and the solar-weighted reflectance (SWR) of 2.38%, compared to that of a bare GaAs substrate (R-avg, 37.50%; SWR, 36.72%) in the wavelength range of 300 to 870 nm. (C) 2015 Optical Society of America
机译:我们提出了一种光捕获结构,由锥形AgAs亚波长结构(SWSs)上的AuAg双金属非合金纳米颗粒(BNNPs)组成,结合了基于GaAs的太阳能电池应用的等离激元结构和SWS的优势。为了在太阳能电池中获得有效的光捕获,系统地研究了光学性质对Ag和Au金属纳米粒子的大小和组成的依赖性。由12 nm的Au膜和10 nm的Ag膜形成的具有AuAg BNNP的圆锥形GaAs SWS的极低平均反射率(R-avg)为2.43%,太阳加权反射率(SWR)为2.38%,与300至870 nm波长范围内的裸砷化镓衬底(R-avg,37.50%; SWR,36.72%)相比。 (C)2015年美国眼镜学会

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