The Design and Optimization of an Anti-Reflection Coating and an Intermediate Reflective Layer to Enhance Tandem Solar Cell Photons Capture

Crystals

Z. S. Matar¹  N. S. Abd El-Gawaad²  A. F. Amin³  M. Al-Dossari⁴  Arafa H. Aly⁵  Hassan Sayed⁵ 

[1] Department of Physics, Faculty of Applied Science, Umm Al-Qura University, Mecca 24382, Saudi Arabia;Faculty of Science, King Khalid University, Abha 61421, Saudi Arabia;Faculty of Technology and Education, Beni-Suef University, Beni Suef 62521, Egypt;Physics Department, King Khalid University, Dhahran Aljanoub, Abha 61421, Saudi Arabia;TH-PPM Group, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt;

关键词: tandem solar cell;    intermediate reflective layers;    photonic crystals;    anti-reflection;   

DOI  :  10.3390/cryst12010057

来源: DOAJ

【 摘 要 】

We have theoretically demonstrated an efficient way to improve the optical properties of an anti-reflection coating (ARC) and an intermediate reflective layer (IRL) to enhance tandem solar cell efficiency by localizing the incident photons’ energy on a suitable sub-cell. The optimum designed ARC from a one-dimensional ternary photonic crystal, consisting of a layer of silicon oxynitride ($SiON$), was immersed between two layers of (SiO₂); thicknesses were chosen to be 98 nm, 48 nm, and 8 nm, respectively. The numerical results show the interesting transmission properties of the anti-reflection coating on the viable and near IR spectrum. The IRL was designed from one-dimensional binary photonic crystals and the constituent materials are Bi₄Ge₃O₁₂ and μc-SiO_x: H with refractive indexes was 2.05, and 2.8, respectively. The numbers of periods were set to 10. Thicknesses: d₁ = 62 nm and d₂ = 40 nm created a photonic bandgap (PBG) in the range of [420 nm: 540 nm]. By increasing the second material thickness to 55 nm, and 73 nm, the PBG shifted to longer wavelengths: [520 nm: 630 nm], and [620 nm: 730 nm], respectively. Thus, by stacking the three remaining structures, the PBG widened and extended from 400 nm to 730 nm. The current theoretical and simulation methods are based on the fundamentals of the transfer matrix method and finite difference time domain method.

【 授权许可】

Unknown