Details

Autor(en) / Beteiligte

• Zhang, Dandan
• Yang, Yiming
• Bekenstein, Yehonadav
• Yu, Yi
• Gibson, Natalie A
• Wong, Andrew B
• Eaton, Samuel W
• Kornienko, Nikolay
• Kong, Qiao
• Lai, Minliang
• Alivisatos, A. Paul
• Leone, Stephen R
• Yang, Peidong

Titel

Synthesis of Composition Tunable and Highly Luminescent Cesium Lead Halide Nanowires through Anion-Exchange Reactions

Ist Teil von

• Journal of the American Chemical Society, 2016-06, Vol.138 (23), p.7236-7239

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Here, we demonstrate the successful synthesis 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 well-preserved morphology and crystal structure. The NWs 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.