Large-scale, adhesive-free and omnidirectional 3D nanocone anti-reflection films for high performance photovoltaics  

作　　者：Lei Tang Kwong-Hoi Tsui Siu-Fung Leung Qianpeng Zhang Matthew Kam Hsin-Ping Wang Jr-Hau He Zhiyong Fan 

机构地区：[1]HKUST-Shenzhen Research Institute [2]Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology (HKUST) [3]Computer, Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology

出　　处：《Journal of Semiconductors》2019年第4期35-41,共7页半导体学报（英文版）

基　　金：supported by National Natural Science Foundation of China(Project No.51672231);Shen Zhen Science and Technology Innovation Commission(Project No.JCYJ20170818114107730);Hong Kong Research Grant Council(General Research Fund Project Nos.16237816,16309018);the support from the Center for 1D/2D Quantum Materials and the State Key Laboratory on Advanced Displays and Optoelectronics at HKUST

摘　　要：An effective and low-cost front-side anti-reflection(AR) technique has long been sought to enhance the performance of highly efficient photovoltaic devices due to its capability of maximizing the light absorption in photovoltaic devices. In order to achieve high throughput fabrication of nanostructured flexible and anti-reflection films, large-scale, nano-engineered wafer molds were fabricated in this work. Additionally, to gain in-depth understanding of the optical and electrical performance enhancement with AR films on polycrystalline Si solar cells, both theoretical and experimental studies were performed. Intriguingly,the nanocone structures demonstrated an efficient light trapping effect which reduced the surface reflection of a solar cell by17.7% and therefore enhanced the overall electric output power of photovoltaic devices by 6% at normal light incidence. Notably, the output power improvement is even more significant at a larger light incident angle which is practically meaningful for daily operation of solar panels. The application of the developed AR films is not only limited to crystalline Si solar cells explored here, but also compatible with any types of photovoltaic technology for performance enhancement.An effective and low-cost front-side anti-reflection(AR) technique has long been sought to enhance the performance of highly efficient photovoltaic devices due to its capability of maximizing the light absorption in photovoltaic devices. In order to achieve high throughput fabrication of nanostructured flexible and anti-reflection films, large-scale, nano-engineered wafer molds were fabricated in this work. Additionally, to gain in-depth understanding of the optical and electrical performance enhancement with AR films on polycrystalline Si solar cells, both theoretical and experimental studies were performed. Intriguingly,the nanocone structures demonstrated an efficient light trapping effect which reduced the surface reflection of a solar cell by17.7% and therefore enhanced the overall electric output power of photovoltaic devices by 6% at normal light incidence. Notably, the output power improvement is even more significant at a larger light incident angle which is practically meaningful for daily operation of solar panels. The application of the developed AR films is not only limited to crystalline Si solar cells explored here, but also compatible with any types of photovoltaic technology for performance enhancement.

关 键 词：ANTIREFLECTION CRYSTALLINE Si solar cells flexible film 

分 类 号：TN[电子电信]