Enhanced Optical and Electrical Properties of Polymer-Assisted All-Inorganic Perovskites for Light-Emitting Diodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 27530447.
- Also identified by DOI 10.1002/adma.201602513.
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Abstract
Highly bright light-emitting diodes based on solution-processed all-inorganic perovskite thin film are demonstrated. The cesium lead bromide (CsPbBr<sub>3</sub> ) created using a new poly(ethylene oxide)-additive spin-coating method exhibits photoluminescence quantum yield up to 60% and excellent uniformity of electrical current distribution. Using the smooth CsPbBr<sub>3</sub> films as emitting layers, green perovskite-based light-emitting diodes (PeLEDs) exhibit electroluminescent brightness and efficiency above 53 000 cd m<sup>-2</sup> and 4%: a new benchmark of device performance for all-inorganic PeLEDs.