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8091165 
Journal Article 
ELECTRICAL-PROPERTIES OF BLACK PHOSPHORUS SINGLE-CRYSTALS 
Akahama, Y; Endo, S; Narita, S 
1983 
1 
Physical Society of Japan. Journal
ISSN: 0031-9015 
52 
6 
2148-2155 
English 
WOS:A1983RC08100040 
Large single crystals of black phosphorus have been grown under high pressure, and by using the crystals, the Hall measurements have been done in a range from 4.2 K to 550 K. All the undoped samples have exhibited p-type conduction, while we have succeeded in obtaining w-type crystals by doping Te impurity. The effective acceptor concentrations NA-ND of the n-type samples and those of donor in p-type samples ND-NA have been in the range of 2~5 x 1015 cm-3 and 2~3 x 1016 cm-3, respectively. From the intrinsic range of the conductivity, the energy gap has been estimated to be 0.335 eV. The acceptor and donor activation energies have been determined to be ~18 meV and ~ 39 meV, respectively. The Hall mobility of the hole reaches its maximum of 6.5 x 104 cm2/V-sec around 20 K. The anisotropies of the conductivity and the mobility along the three crystal axes have been investigated. © 1983, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.