Journal ArticleDOI
Pressure dependence of the electrical conductivity of amorphous red phosphorus
P. Extance,S.R. Elliott +1 more
TLDR
In this paper, the d.c. resistance of amorphous red phosphorus has been measured up to pressures of 90 kbar and at 70 kbar, a transition to orthorhombic black phosphorus was observed.Abstract:
The d.c. resistance of amorphous red phosphorus has been measured up to pressures of 90 kbar. At 70 kbar, a transition to orthorhombic black phosphorus was observed. The effect of an initially inhomogeneous microstructure is discussed. At a fixed pressure, a time dependence of the resistance was observed, and this is considered to be due to a relaxation of the glass structure. The temperature dependence of the resistance at constant pressure suggests that variable-range hopping becomes the dominant conductivity mechanism as pressure is increased and an increase in the number of defect sites is responsible for the decrease of resistance. Comparison is made with the chalcogenide glasses, the tetrahedral amorphous materials and with preliminary data for phosphorus produced by chemical transport in a low-pressure hydrogen plasma.read more
Citations
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Journal ArticleDOI
A.c. conduction in amorphous chalcogenide and pnictide semiconductors
TL;DR: In this article, a comprehensive survey is given of the experimental a.c. data for two types of amorphous semiconductor, namely chalcogenide and pnictide materials, and it is concluded that the behavior at intermediate to high temperatures is well accounted for by the correlated-barrier-hopping model, whereas the low-temperature behaviour is probably due to atomic tunnelling.
Journal ArticleDOI
An amorphous red phosphorus/carbon composite as a promising anode material for sodium ion batteries.
Youngjin Kim,Yuwon Park,Yuwon Park,Aram Choi,Nam-Soon Choi,Jeongsoo Kim,Junesoo Lee,Ji Heon Ryu,Seung M. Oh,Kyu Tae Lee +9 more
TL;DR: The amorphous red phosphorus/carbon composite shows excellent electrochemical performance including a high specific capacity, negligible capacity fading over 30 cycles, an ideal redox potential, and an excellent rate performance, thus making it a promising candidate for Na ion batteries.
Journal ArticleDOI
Amorphous Red Phosphorus Embedded in Highly Ordered Mesoporous Carbon with Superior Lithium and Sodium Storage Capacity
TL;DR: The significantly improved electrochemical performance could be attributed to the unique structure that combines a variety of advantages: easy access of electrolyte to the open channel structure, short transport path of ions through carbon toward the red P, and high ionic and electronic conductivity.
Journal ArticleDOI
Red Phosphorus–Single-Walled Carbon Nanotube Composite as a Superior Anode for Sodium Ion Batteries
TL;DR: The red P-SWCNT composite fabricated by the vaporization-condensation method significantly extends the cycling stability of P/carbon composite from current ∼100 cycles to ∼2000 cycles.
References
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Journal ArticleDOI
Two new modifications of phosphorus.
Journal ArticleDOI
Refinement of the crystal structure of black phosphorus
A. Brown,S. Rundqvist +1 more
Journal ArticleDOI
The Atomic Distribution in Red and Black Phosphorus and the Crystal Structure of Black Phosphorus
TL;DR: In this paper, the atomic distribution curves of crystalline and "amorphous" black and red phosphorus were obtained by the method of Fourier analysis, showing three neighbors at 2.28A and about twelve at 3.6A.