The complete in-gap electronic structure of colloidal quantum dot solids and its correlation with electronic transport and photovoltaic performance.
basic_science · Level V
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- Record sourced from PubMed, PMID 24243769.
- Also identified by DOI 10.1002/adma.201304166.
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Abstract
The direct observation of the complete electronic band structure of a family of PbS CQD solids via photoelectron spectroscopy is reported. We investigate how materials processing strategies, such as the latest passivation methods that produce record-performance photovoltaics, achieve their performance advances. Halide passivated films show a drastic reduction in states in the midgap, contributing to a marked improvement in the device performance.