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Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials

(2016) JOURNAL OF MATERIALS CHEMISTRY C. 4(21). p.4756-4762
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Abstract
We present a high-yield and scalable colloidal synthesis to produce monodisperse AgSbSe2 nanocrystals (NCs). Using nuclear magnetic resonance (NMR) spectroscopy, we characterized the NC surface chemistry and demonstrate the presence of surfactants in dynamic exchange, which controls the NC growth mechanism. In addition, these NCs were electronically doped by introducing small amounts of bismuth. To demonstrate the technological potential of such processed material, after ligand removal by means of NaNH2, AgSbSe2 NCs were used as building blocks to produce thermoelectric (TE) nanomaterials. A preliminary optimization of the doping concentration resulted in a thermoelectric figure of merit (ZT) of 1.1 at 640 K, which is comparable to the best ZT values obtained with a Pb- and Te-free material in this middle temperature range, with the additional advantage of the high versatility and low cost associated with solution processing technologies.
Keywords
THIN-FILMS, P-TYPE AGSBSE2, PHOTOVOLTAIC STRUCTURE, LIGAND DISPLACEMENT, PERFORMANCE, AGSBTE2, CHEMISTRY, DIFFUSION

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MLA
Liu, Yu et al. “Colloidal AgSbSe2 Nanocrystals: Surface Analysis, Electronic Doping and Processing into Thermoelectric Nanomaterials.” JOURNAL OF MATERIALS CHEMISTRY C 4.21 (2016): 4756–4762. Print.
APA
Liu, Yu, Cadavid, D., Ibáñanez, M., De Roo, J., Ortega, S., Dobrozhan, O., Kovalenko, M. V., et al. (2016). Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials. JOURNAL OF MATERIALS CHEMISTRY C, 4(21), 4756–4762.
Chicago author-date
Liu, Yu, Doris Cadavid, Maria Ibáñanez, Jonathan De Roo, Silvia Ortega, Oleksandr Dobrozhan, Maksym V Kovalenko, and Andreu Cabot. 2016. “Colloidal AgSbSe2 Nanocrystals: Surface Analysis, Electronic Doping and Processing into Thermoelectric Nanomaterials.” Journal of Materials Chemistry C 4 (21): 4756–4762.
Chicago author-date (all authors)
Liu, Yu, Doris Cadavid, Maria Ibáñanez, Jonathan De Roo, Silvia Ortega, Oleksandr Dobrozhan, Maksym V Kovalenko, and Andreu Cabot. 2016. “Colloidal AgSbSe2 Nanocrystals: Surface Analysis, Electronic Doping and Processing into Thermoelectric Nanomaterials.” Journal of Materials Chemistry C 4 (21): 4756–4762.
Vancouver
1.
Liu Y, Cadavid D, Ibáñanez M, De Roo J, Ortega S, Dobrozhan O, et al. Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials. JOURNAL OF MATERIALS CHEMISTRY C. 2016;4(21):4756–62.
IEEE
[1]
Y. Liu et al., “Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials,” JOURNAL OF MATERIALS CHEMISTRY C, vol. 4, no. 21, pp. 4756–4762, 2016.
@article{8028714,
  abstract     = {We present a high-yield and scalable colloidal synthesis to produce monodisperse AgSbSe2 nanocrystals (NCs). Using nuclear magnetic resonance (NMR) spectroscopy, we characterized the NC surface chemistry and demonstrate the presence of surfactants in dynamic exchange, which controls the NC growth mechanism. In addition, these NCs were electronically doped by introducing small amounts of bismuth. To demonstrate the technological potential of such processed material, after ligand removal by means of NaNH2, AgSbSe2 NCs were used as building blocks to produce thermoelectric (TE) nanomaterials. A preliminary optimization of the doping concentration resulted in a thermoelectric figure of merit (ZT) of 1.1 at 640 K, which is comparable to the best ZT values obtained with a Pb- and Te-free material in this middle temperature range, with the additional advantage of the high versatility and low cost associated with solution processing technologies.},
  author       = {Liu, Yu and Cadavid, Doris and Ibáñanez, Maria and De Roo, Jonathan and Ortega, Silvia and Dobrozhan, Oleksandr and Kovalenko, Maksym V and Cabot, Andreu},
  issn         = {2050-7526},
  journal      = {JOURNAL OF MATERIALS CHEMISTRY C},
  keywords     = {THIN-FILMS,P-TYPE AGSBSE2,PHOTOVOLTAIC STRUCTURE,LIGAND DISPLACEMENT,PERFORMANCE,AGSBTE2,CHEMISTRY,DIFFUSION},
  language     = {eng},
  number       = {21},
  pages        = {4756--4762},
  title        = {Colloidal AgSbSe2 nanocrystals: surface analysis, electronic doping and processing into thermoelectric nanomaterials},
  url          = {http://dx.doi.org/10.1039/c6tc00893c},
  volume       = {4},
  year         = {2016},
}

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