Abstract
The front transparent conductive oxide (TCO) layers of silicon heterojunction solar cells need to be optimized electrically and optically to minimize losses due to sheet resistance and free carrier absorption. This optimization has already investigated for the wavelength range of 300-1100 nm, but not for the projected wavelength range of 700-1100 nm for a silicon cell that is applied in a tandem structure as the bottom cell. Here, we demonstrate a routine for determining the total loss associated with the front TCO layer and employ it to determine which carrier density, mobility, and finger pitch combinations minimize loss. For a representative ITO film with a mobility of approximately 20 cm2/Vs and a carrier density of approximately 2.5×1020 cm-3, the total loss over the wavelength range of 700-1100 nm is minimized by using a linger spacing of 3 mm and ITO thickness of 100-110 nm.
Original language | English (US) |
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Title of host publication | 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 681-684 |
Number of pages | 4 |
Volume | 2016-November |
ISBN (Electronic) | 9781509027248 |
DOIs | |
State | Published - Nov 18 2016 |
Event | 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States Duration: Jun 5 2016 → Jun 10 2016 |
Other
Other | 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 |
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Country/Territory | United States |
City | Portland |
Period | 6/5/16 → 6/10/16 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering