All-inorganic colloidal quantum dot photovoltaics employing solution-phase halide passivation.
basic_science · Level V
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- Record sourced from PubMed, PMID 22968838.
- Also identified by DOI 10.1002/adma.201202942.
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Abstract
A new solution-phase halide passivation strategy to improve the electronic properties of colloidal quantum dot films is reported. We prove experimentally that the approach leads to an order-of-magnitude increase in mobility and a notable reduction in trap state density. We build solar cells having the highest efficiency (6.6%) reported using all-inorganic colloidal quantum dots. The improved photocurrent results from increased efficiency of collection of infrared-generated photocarriers.