Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 23, Pages 7236-7239Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03134
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Funding
- U.S. Department of Energy [DE-AC02-05CH11231]
- office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
- Suzhou Industrial Park
- Camille and Henry Dreyfus Foundation [EP-14-151]
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Here, we demonstrate the successful syn.= thesis of brightly emitting colloidal cesium lead halide (CsPbX3, X = Cl, Br, I) nanowires (NWs) with uniform diameters and tunable compositions. By using highly monodisperse CsPbBr3 NWs as templates, the NW composition can be independently controlled through anion-exchange reactions. CsPbX3 alloy NWs with a wide range of alloy compositions can be achieved with wellpreserved morphology and crystal structure. The NI/Vs are highly luminescent with photoluminescence quantum yields (PLQY) ranging from 20% to 80%. The bright photoluminescence can be tuned over nearly the entire visible spectrum. The high PLQYs together with charge transport measurements exemplify the efficient alloying of the anionic sublattice in a one-dimensional CsPbX3 system. The wires increased functionality in the form of fast photoresponse rates and the low defect density suggest CsPbX3 NWs as prospective materials for,optoelectronic applications.
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