Measured approach to organic solar cell mastery
https://discovery.kaust.edu.sa/en/article/1274/measured-approach-to-organic-solar-cell-mastery
"determined energy levels of 33 organic solar materials using four different techniques... energy levels of organic semiconductors measured using photoelectron and low-energy inverse photoelectron spectroscopy closely correlate to properties of solar cells... blends with little to no difference in one energy level metric, known as the ionization energy, were poor performers... best performing organic solar cells had significant difference in ionization energy between donor and acceptor component"
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