Controllable Carrier Type in Boron Phosphide Nanowires Toward Homostructural Optoelectronic Devices.

Title Controllable Carrier Type in Boron Phosphide Nanowires Toward Homostructural Optoelectronic Devices.
Authors N. Ding; J. Xu; Q. Zhang; J. Su; Y. Gao; X. Zhou; T. Zhai
Journal ACS Appl Mater Interfaces
DOI 10.1021/acsami.7b17204
Abstract

The p-n junction is one important and fundamental building block of the optoelectronic age. However, electrons and holes will be severely scattered in heterostructures led by the grain boundary at the alloy interface between two dissimilar semiconductors. In this work, we present boron phosphide (BP) nanowires with artificially controllable carrier type for the fabrication of homojunctions via adjusting borane/phosphine ratio during the deposition process, both prove high crystallization with fewer impurities. The homojunctions that consist of  n-type and p-type BP nanowires show apparent photovoltaic effect [external quantum efficiency ? 10% under a ?0.4 pW light @ 600 nm] and the quenched photoluminescence within the junction area, which indicates the effective separation and transfer of photogenerated charge carriers at the interface. The achievement of controllable carrier type implemented in the same material ushers in a frontier for the design of nanoscale homojunctions toward advanced optoelectronic devices.

Citation N. Ding; J. Xu; Q. Zhang; J. Su; Y. Gao; X. Zhou; T. Zhai.Controllable Carrier Type in Boron Phosphide Nanowires Toward Homostructural Optoelectronic Devices.. ACS Appl Mater Interfaces. 2018;10(12):1029610303. doi:10.1021/acsami.7b17204

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Boron

See more Boron products. Boron Bohr ModelBoron (atomic symbol: B, atomic number: 5) is a Block P, Group 13, Period 2 element with an atomic weight of 10.81. The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [He] 2s2 2p1. The boron atom has a radius of 90 pm and a Van der Waals radius of 192 pm. Boron was discovered by Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808 and was first isolated by Humphry Davy later that year. Boron is classified as a metalloid is not found naturally on earth. Elemental BoronAlong with carbon and nitrogen, boron is one of the few elements in the periodic table known to form stable compounds featuring triple bonds. Boron has an energy band gap of 1.50 to 1.56 eV, which is higher than that of either silicon or germanium. The name Boron originates from a combination of carbon and the Arabic word buraqu meaning borax.

Phosphorus

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