Direct electrodeposition of highly dense 50 nm Bi2Te3-ySey nanowire arrays

被引:144
作者
Martín-González, M
Snyder, GJ
Prieto, AL
Gronsky, R
Sands, T
Stacy, AM
机构
[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[2] CALTECH, Jet Prop Lab, Thermoelect Mat & Devices Team, Pasadena, CA 91109 USA
[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
关键词
D O I
10.1021/nl034079s
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Films and arrays of 200 and 50 nm diameter wires of Bi2Te3-xSex have been electrodeposited in the following general reaction: 2Bi(3+) + (3-y)HTeO2+ + (y)H2SeO3 + (9+y)H+ + 18e(-) --> Bi2Te3-ySey + (6+y)H2O. Films produced from an electrolyte of 0.0075 M Bi, 0,0090 M Te, and 0.0010 M Se in 1 M HNO3 at a potential of similar to0 V vs Ag/AgCl are single phase with composition Bi2Te2.6Se0.4 as determined by X-ray diffraction, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. Similar conditions yield arrays of 200 and 50 nm Bi2Te3-ySey wires when deposited into porous alumina templates. The wires are single phase, crystalline, and textured, with up to 85% pore filling.
引用
收藏
页码:973 / 977
页数:5
相关论文
共 28 条
  • [1] Significant decrease of the lattice thermal conductivity due to phonon confinement in a free-standing semiconductor quantum well
    Balandin, A
    Wang, KL
    [J]. PHYSICAL REVIEW B, 1998, 58 (03): : 1544 - 1549
  • [2] Effect of phonon confinement on the thermoelectric figure of merit of quantum wells
    Balandin, A
    Wang, KL
    [J]. JOURNAL OF APPLIED PHYSICS, 1998, 84 (11) : 6149 - 6153
  • [3] THERMOELECTRIC FIGURE OF MERIT OF QUANTUM-WIRE SUPERLATTICES
    BROIDO, DA
    REINECKE, TL
    [J]. APPLIED PHYSICS LETTERS, 1995, 67 (01) : 100 - 102
  • [4] Transport properties of Bi1-xSbx alloy thin films grown on CdTe(111)B
    Cho, S
    DiVenere, A
    Wong, GK
    Ketterson, JB
    Meyer, JR
    [J]. PHYSICAL REVIEW B, 1999, 59 (16) : 10691 - 10696
  • [5] *CRC, 1995, CRC HDB THERM
  • [6] Dresselhaus MS, 1999, MICROSCALE THERM ENG, V3, P89
  • [7] DRESSELHAUS MS, 1997, LOW DIMEMSIONAL THER, V16, P12
  • [8] Development of thick-film thermoelectric microcoolers using electrochemical deposition
    Fleurial, JP
    Borshchevsky, A
    Ryan, MA
    Phillips, WM
    Snyder, JG
    Caillat, T
    Kolawa, A
    Herman, JA
    Mueller, P
    Nicolet, M
    [J]. THERMOELECTRIC MATERIALS 1998 - THE NEXT GENERATION MATERIALS FOR SMALL-SCALE REFRIGERATION AND POWER GENERATION APPLICATIONS, 1999, 545 : 493 - 500
  • [9] Thermoelectric quantum-dot superlattices with high ZT
    Harman, TC
    Taylor, PJ
    Spears, DL
    Walsh, MP
    [J]. JOURNAL OF ELECTRONIC MATERIALS, 2000, 29 (01) : L1 - L4
  • [10] EFFECT OF QUANTUM-WELL STRUCTURES ON THE THERMOELECTRIC FIGURE OF MERIT
    HICKS, LD
    DRESSELHAUS, MS
    [J]. PHYSICAL REVIEW B, 1993, 47 (19): : 12727 - 12731