Abstract
We propose a novel design using multi-resonant absorption to achieve efficient light-trapping in ultra-thin (< 100 nm) solar cells. It is based on a patterned metallic layer which i) strongly confines light in an ultra-thin and flat absorber layer and ii) plays the role of a front contact combining high optical transparency and good electrical conductivity. This versatile approach is applied to different solar cells materials (a-Si:H, GaAs) and geometries of the patterned film (1D or 2D). We demonstrate a theoretical conversion efficiency over 20 % using a 2D silver nanogrid to enhance absorption in a 25 nm-thick GaAs absorber layer. First demonstrators were fabricated and optically characterized. This work should pave the way towards high-efficiency ultra-thin solar cells.
| Original language | English |
|---|---|
| Title of host publication | 39th IEEE Photovoltaic Specialists Conference, PVSC 2013 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 17-21 |
| Number of pages | 5 |
| ISBN (Print) | 9781479932993 |
| DOIs | |
| Publication status | Published - 1 Jan 2013 |
| Event | 39th IEEE Photovoltaic Specialists Conference, PVSC 2013 - Tampa, FL, United States Duration: 16 Jun 2013 → 21 Jun 2013 |
Publication series
| Name | Conference Record of the IEEE Photovoltaic Specialists Conference |
|---|---|
| ISSN (Print) | 0160-8371 |
Conference
| Conference | 39th IEEE Photovoltaic Specialists Conference, PVSC 2013 |
|---|---|
| Country/Territory | United States |
| City | Tampa, FL |
| Period | 16/06/13 → 21/06/13 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Amorphous silicon
- GaAs
- Light trapping
- Photovoltaic cells
- Plasmonics
- Thin-film
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