Abstract
We employed current-voltage (I-V), quantum efficiency (QE), photoluminescence (PL), electroluminescence (EL), lock-in thermography (LIT), and (electrochemical) impedance spectroscopy (ECIS) to complementarily characterize the performance and remedy for two pairs of experimental CuInGaSe 2 (CIGS) mini-modules. One pair had the three scribe-lines (P1/P2/P3) done by a single pulse-programmable laser, and the other had the P2/P3 lines by mechanical scribe. Localized QE measurements for each cell strip on all four mini-modules showed non-uniform distributions that correlated well with the presence of performance-degrading strips or spots revealed by PL, EL, and LIT imaging. Performance of the all-laser-scribed mini-modules improved significantly by adding a thicker Al-doped ZnO layer and reworking the P3 line. The efficiency on one of the all-laser-scribed mini-modules increased notably from 7.80% to 8.56% after the performance-degrading spots on the side regions along the cell array were isolated by manual scribes.
Original language | American English |
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Pages | 2792-2797 |
Number of pages | 6 |
DOIs | |
State | Published - 2011 |
Event | 37th IEEE Photovoltaic Specialists Conference, PVSC 2011 - Seattle, WA, United States Duration: 19 Jun 2011 → 24 Jun 2011 |
Conference
Conference | 37th IEEE Photovoltaic Specialists Conference, PVSC 2011 |
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Country/Territory | United States |
City | Seattle, WA |
Period | 19/06/11 → 24/06/11 |
Bibliographical note
See NREL/CP-5200-51812 for preprintNREL Publication Number
- NREL/CP-5200-55753