Work

Al2O3/TiO2 nano-pattern antireflection coating with ultralow surface recombination

Year: 2013

Type: article

Abstract: We present a nano-patterned dielectric coating for crystalline Si solar cells that combines excellent anti-reflection and passivation properties. The nano-patterned coating comprises an array of TiO2 nanocylinders placed on top of an ultra-thin Al2O3 layer on a flat Si(100) wafer. The antireflection effect stems from the preferential forward scattering of light through leaky Mie resonances in the TiO2 nanocylinders. The Al2O3 layer provides excellent passivation of the Si surface. We experimentally demonstrate ultralow surface recombination with carrier lifetimes above 4 ms, combined with a reflectivity of 2.8% averaged over a broad spectral range.

Source: Applied Physics Letters

DOI: 10.1063/1.4810970

Authors: P. Spinelli, B. Macco, M. A. Verschuuren, W. M. M. Kessels, A. Polman

Institutions: Institute for Atomic and Molecular Physics, Eindhoven University of Technology, Philips (Netherlands)

Language: English

Topic: Silicon and Solar Cell Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Nederlandse Organisatie voor Wetenschappelijk Onderzoek

OpenAlex ID: W1978347618

FWCI: 6.136

Cites: 13

Cited by: 84

Related to: 10