Journal article
Probing individal subcells of fully printed and coated polymer tandem solar cells using multichromatic opto-electronic characterization methods
In this study, a method to opto-electronically probe the individual junctions and carrier transport across interfaces in fully printed and coated tandem polymer solar cells is described, enabling the identification of efficiency limiting printing/coating defects. The methods used are light beam induced current (LBIC) mapping, External quantum efficiency (EQE) measurements, and monochromatic current-voltage (I-V) characterization.
Using these methods, inherent limitations to the accuracy of EQE and LBIC measurements on non-ideal tandem solar cells are identified and described through the use of a small-signal electrical model. The model is able to predict the EQE spectrum of the non-ideal polymer tandem solar cell, using extracted values of shunt- and series resistance of the individual junction of the tandem cell.
This finally enables LBIC mapping of the individual junctions of the tandem polymer solar cells, using a combination of light and voltage-biasing.
Language: | English |
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Year: | 2015 |
Pages: | 154-163 |
ISSN: | 09270248 and 18793398 |
Types: | Journal article |
DOI: | 10.1016/j.solmat.2015.01.030 |
ORCIDs: | Larsen-Olsen, Thue Trofod , Jørgensen, Mikkel and Krebs, Frederik C |