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Growth and crystal properties of Tl-doped PbTe crystals grown by Bridgman method under Pb and Te vapor pressure
Nugrahaa,b, Tamura W.c, Itoh O.a,d, Amemiya T.c, Suto K.a,c, Nishizawa J.-I.a,d
a Telecommunication Adv. Org. of Japan, Sendai Res. Ctr., Koeji19 N., Japan
b Department of Engineering Physics, Bandung Inst. Technol., Jl. G., Indonesia
c Department of Materials Science, Fac. Eng., Tohoku Univ., A., Japan
d Semiconductor Research Institute, Kawauchi Aoba, 980-0862, Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Growth of high-quality Tl-doped p-type PbTe single crystals by Bridgman method under controlled Te or Pb vapor pressure has been investigated. For high concentration of Tl in the melt (0.65 at%), the hole concentrations for crystals grown under applied Pb vapor pressures (1.5×1019-2×1019 cm-3) are higher than those for crystals grown under applied Te vapor pressures (5×1018-8×1018 cm-3). For low concentration of Tl (0.082 at%), the hole concentration is decreased with increasing Te vapor pressure. The PbTe crystals grown with high concentration of Tl under applied Pb vapor pressures show small FWHM of X-ray rocking curve ranging from 20 to 50 arcsec. Their etch pit densities are in the range of 8×104-6×105 cm-2, which are an order of magnitude lower than those of undoped PbTe crystals. These results indicate that highly Tl-doped (0.65 at%) PbTe crystals, in particular, those grown under applied Pb vapor pressure, have an excellent crystal quality.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Bridgman method,Lead telluride[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/S0022-0248(00)00875-7[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]