Journal article
Efficient nanostructured 'black' silicon solar cell by copper-catalyzed metal-assisted etching
Progress in photovoltaics, Vol.23(10), pp.1375-1380
10/2015
DOI: 10.1002/pip.2562
Abstract
We produce low-reflectivity nanostructured ‘black’ silicon (bSi) using copper (Cu) nanoparticles as the catalyst for metal-assisted etching and demonstrate a 17.0%-efficient Cu-etched bSi solar cell without any vacuum-deposited anti-reflection coating. The concentration ratio of HF to H2O2 in the etch solution provides control of the nanostructure morphology. The solar-spectrum-weighted average reflection (Rave) for bSi is as low as 3.1% on Cu-etched planar samples; we achieve lower reflectivity by nanostructuring of micron-scale pyramids. Successful Cu-based anti-reflection etching requires a concentration ratio [HF]/[H2O2] ≥ 3. Our 17.0%-efficient Cu-etched bSi photovoltaic cell with a pyramid-texture has a Rave of 3% and an open circuit voltage (Voc) of 616 mV that might be further improved by reducing near-surface phosphorus (P) densities
Details
- Title: Subtitle
- Efficient nanostructured 'black' silicon solar cell by copper-catalyzed metal-assisted etching
- Creators
- Fatima Toor - National Laboratory of the RockiesJihun Oh - National Laboratory of the RockiesHoward M Branz - National Laboratory of the Rockies
- Resource Type
- Journal article
- Publication Details
- Progress in photovoltaics, Vol.23(10), pp.1375-1380
- DOI
- 10.1002/pip.2562
- ISSN
- 1062-7995
- eISSN
- 1099-159X
- Publisher
- Blackwell Publishing Ltd
- Number of pages
- 6
- Grant note
- DOI: 10.13039/100000015, name: U.S. Department of Energy, award: DE‐AC36‐08GO28308
- Language
- English
- Date published
- 10/2015
- Academic Unit
- Electrical and Computer Engineering; Iowa Technology Institute; Physics and Astronomy; Holden Comprehensive Cancer Center
- Record Identifier
- 9984197355502771
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