Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Jessica L. Lensch-Falk"'
Autor:
Steven J. Limmer, W. Graham Yelton, Michael P. Siegal, Douglas L. Medlin, Erickson Kristopher J, Jamin Ryan Pillars, Michelle A. Hekmaty, Jessica L. Lensch-Falk
Publikováno v:
Journal of Materials Research. 30:164-169
Using galvanostatic pulse deposition, we studied the factors influencing the quality of electroformed Bi1–xSbx nanowires with respect to composition, crystallinity, and preferred orientation for high thermoelectric performance. Two nonaqueous baths
Autor:
W. Graham Yelton, Steven J. Limmer, Jessica L. Lensch-Falk, Erickson Kristopher J, Michael P. Siegal, Caitlin Rochford, Douglas L. Medlin
Publikováno v:
Journal of Materials Research. 29:182-189
Achieving control of crystalline quality is a key barrier to developing thermoelectric (TE) nanowires. We show that the structural properties of free-standing Bi2(Te.97Se.03)3 nanowire arrays on substrates can be improved by postdeposition annealing.
Autor:
Douglas L. Medlin, Dhego Banga, David B. Robinson, Peter Anand Sharma, Jessica L. Lensch-Falk, Vitalie Stavila, Patrick E. Hopkins
Publikováno v:
Thin Solid Films. 520:6109-6117
Electrodeposition is a promising low-cost method to fabricate nanostructured thermoelectric thin films such as Sb 2 Te 3 . However, electrodeposition of crystalline Sb 2 Te 3 without the need for additional processing and with good compositional cont
Autor:
I. Alber, Douglas L. Medlin, Markus Rauber, Oliver Picht, Reinhard Neumann, Sven Müller, Maria Eugenia Toimil-Molares, Jessica L. Lensch-Falk
Publikováno v:
The Journal of Physical Chemistry C. 116:5367-5375
We report the fabrication of Bi2Te3 nanowires with diameters as small as 15 nm, which is comparable to the size theoretically estimated for the onset of improvement of the thermoelectric figure of merit ZT by quantum-size effects. The versatility of
Autor:
Nancy Y. C. Yang, Douglas L. Medlin, David B. Robinson, Jessica L. Lensch-Falk, Dhego Banga, Peter Anand Sharma, Vitalie Stavila
Publikováno v:
Crystal Growth & Design. 12:1347-1353
Thin film Bi2Te3/Sb2Te3 multilayers are thought to possess a high thermoelectric figure of merit. Our work describes how multilayers can be fabricated using electrodeposition, an inexpensive and scalable synthesis route. We address the challenge of s
Publikováno v:
Journal of Materials Research. 26:2299-2304
Syntaxial growth of Mn11Ge8/Ge nanowire heterostructures was carried out using a vapor–solid–solid (VSS) growth process, and transmission electron microscopy imaging and selected-area electron diffraction were used to study the structure, orienta
Publikováno v:
Advanced Functional Materials. 21:241-249
Thermoelectrics are being rapidly developed for waste heat recovery applications, particularly in automobiles, to reduce carbon emissions. PbTe-based materials with small ( 1.5 at 775 K.
Publikováno v:
Journal of Alloys and Compounds. 504:37-44
Nanostructuring of thermoelectric materials is expected to enhance thermoelectric properties by reducing the thermal conductivity and improving the power factor from that of homogeneous bulk materials. In multiphase, nanostructured thermoelectric mat
Autor:
Eric R. Hemesath, Edwin J. Schwalbach, Peter W. Voorhees, Daniel E. Perea, Lincoln J. Lauhon, Jessica L. Lensch-Falk
Publikováno v:
Nature Nanotechnology. 4:315-319
Semiconductor nanowires show promise for many device applications1,2,3, but controlled doping with electronic and magnetic impurities remains an important challenge4,5,6,7,8. Limitations on dopant incorporation have been identified in nanocrystals9,
Publikováno v:
Journal of Solid State Chemistry. 181:1642-1649
We describe the application of pulsed-laser atom probe (PLAP) tomography to the analysis of dopants and unintentional impurities in Si and Ge nanowires grown by the vapor–liquid–solid mechanism. PLAP tomography was used to determine the concentra