Search Results - "Pavan Kumar, Ventrapati"

Thermal Stability of the Crystal Structure and Electronic Properties of the High Power Factor Thermoelectric Colusite Cu26Cr2Ge6S32 by Lemoine, Pierric, Pavan Kumar, Ventrapati, Guélou, Gabin, Nassif, Vivian, Raveau, Bernard, Guilmeau, Emmanuel

“…A complete study on the thermal stability of the crystal structure and electrical properties, as well as on the phase decomposition, of the high-performance…”
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Copper‐Rich Thermoelectric Sulfides: Size‐Mismatch Effect and Chemical Disorder in the [TS4]Cu6 Complexes of Cu26T2Ge6S32 (T=Cr, Mo, W) Colusites by Pavan Kumar, Ventrapati, Guélou, Gabin, Lemoine, Pierric, Raveau, Bernard, Supka, Andrew R., Al Rahal Al Orabi, Rabih, Fornari, Marco, Suekuni, Koichiro, Guilmeau, Emmanuel

“…Herein, we investigate the Mo and W substitution for Cr in synthetic colusite, Cu26Cr2Ge6S32. Primarily, we elucidate the origin of extremely low electrical…”
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Long-Range Cationic Order Collapse Triggered by S/Cl Mixed-Anion Occupancy Yields Enhanced Thermoelectric Properties in Cu5Sn2S7 by Guélou, Gabin, Pavan Kumar, Ventrapati, Carnevali, Virginia, Lebedev, Oleg I, Raveau, Bernard, Couder, Christophe, Prestipino, Carmelo, Lemoine, Pierric, Malaman, Bernard, Juraszek, Jean, Candolfi, Christophe, Lenoir, Bertrand, Al Rahal Al Orabi, Rabih, Fornari, Marco, Guilmeau, Emmanuel

“…To investigate pathways to adjust the charge carrier concentration and optimize the thermoelectric properties, we characterized structural properties, thermal…”
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High Power Factors of Thermoelectric Colusites Cu26T2Ge6S32 (T = Cr, Mo, W): Toward Functionalization of the Conductive “Cu–S” Network by Pavan Kumar, Ventrapati, Supka, Andrew R., Lemoine, Pierric, Lebedev, Oleg I., Raveau, Bernard, Suekuni, Koichiro, Nassif, Vivian, Al Rahal Al Orabi, Rabih, Fornari, Marco, Guilmeau, Emmanuel

“…The introduction of hexavalent T6+ cations in p‐type thermoelectric colusites Cu26T2Ge6S32 (T = Cr, Mo, W) leads to the highest power factors among…”
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Role of cobalt for titanium substitution on the thermoelectric properties of the thiospinel CuTi2S4 by Bourgès, Cédric, Pavan Kumar, Ventrapati, Nagai, Hiroki, Miyazaki, Yuzuru, Raveau, Bernard, Guilmeau, Emmanuel

“…A complete thiospinel solid solution CuCoxTi2-xS4 (0 ≤ x < 1) has been synthesized by conventional sealed tube synthesis followed by Spark Plasma Sintering,…”
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Transport properties and electronic density-of-states of Zn-doped colusite Cu26Cr2Ge6S32 by Pavan Kumar, Ventrapati, Mitra, Sunanda, Guélou, Gabin, Supka, Andrew R., Lemoine, Pierric, Raveau, Bernard, Al Rahal Al Orabi, Rabih, Fornari, Marco, Suekuni, Koichiro, Guilmeau, Emmanuel

“…Thermoelectric colusites, one of the most recently identified and most promising family of complex Cu–S materials, have quickly attracted significant attention…”
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Copper Hyper-Stoichiometry: The Key for the Optimization of Thermoelectric Properties in Stannoidite Cu8+xFe3–xSn2S12 by Pavan Kumar, Ventrapati, Barbier, Tristan, Caignaert, Vincent, Raveau, Bernard, Daou, Ramzy, Malaman, Bernard, Le Caër, Gérard, Lemoine, P., Guilmeau, Emmanuel

“…A univalent copper hyper-stoichiometric stannoidite Cu8+xFe3–xSn2S12 with 0 ≤ x ≤ 0.5 has been synthesized using mechanical alloying followed by spark plasma…”
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Designing a Thermoelectric Copper-Rich Sulfide from a Natural Mineral: Synthetic Germanite Cu22Fe8Ge4S32 by Pavan Kumar, Ventrapati, Paradis-Fortin, Laura, Lemoine, Pierric, Caignaert, Vincent, Raveau, Bernard, Malaman, Bernard, Le Caër, Gérard, Cordier, Stéphane, Guilmeau, Emmanuel

“…This study shows that the design of copper-rich sulfides by mimicking natural minerals allows a new germanite-type sulfide Cu22Fe8Ge4S32 with promising…”
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Toppling the Transport Properties with Cationic Overstoichiometry in Thermoelectric Colusite: [Cu26Cr2Ge6]1+δS32 by Guélou, Gabin, Pavan Kumar, Ventrapati, Bourhim, Abdelhamid, Lemoine, Pierric, Raveau, Bernard, Supka, Andrew, Lebedev, Oleg I, Al Rahal Al Orabi, Rabih, Fornari, Marco, Suekuni, Koichiro, Guilmeau, Emmanuel

“…The excellent thermoelectric properties of colusite are known to be closely related to the nature of the cations at the core of the tetrahedral–octahedral…”
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Copper‐Rich Thermoelectric Sulfides: Size‐Mismatch Effect and Chemical Disorder in the [TS4]Cu6 Complexes of Cu26T2Ge6S32 (T=Cr, Mo, W) Colusites by Pavan Kumar, Ventrapati, Guélou, Gabin, Lemoine, Pierric, Raveau, Bernard, Supka, Andrew R., Al Rahal Al Orabi, Rabih, Fornari, Marco, Suekuni, Koichiro, Guilmeau, Emmanuel

“…Herein, we investigate the Mo and W substitution for Cr in synthetic colusite, Cu26Cr2Ge6S32. Primarily, we elucidate the origin of extremely low electrical…”
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Influence of Cationic Ordering on the Lattice Dynamics of Monoclinic Cu 5 Sn 2 S 7 and Cubic Cu 5 Sn 2 S 6.65 Cl 0.35 Sulfides by Candolfi, Christophe, Le Gars, Lucas, Guélou, Gabin, Ventrapati, Pavan Kumar, Prestipino, Carmelo, Guizouarn, Thierry, Pasturel, Mathieu, Levinský, Petr, Lemoine, Pierric, Raveau, Bernard, Shen, Xingchen, Lebedev, Oleg I., Berrod, Quentin, Zanotti, Jean-Marc, Guilmeau, Emmanuel

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Thermal Stability of the Crystal Structure and Electronic Properties of the High Power Factor Thermoelectric Colusite Cu 26 Cr 2 Ge 6 S 32 by Lemoine, Pierric, Pavan Kumar, Ventrapati, Guélou, Gabin, Nassif, Vivian, Raveau, Bernard, Guilmeau, Emmanuel

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Time-Resolved In Situ Neutron Diffraction Study of Cu 22 Fe 8 Ge 4 S 32 Germanite: A Guide for the Synthesis of Complex Chalcogenides by Paradis-Fortin, Laura, Lemoine, Pierric, Prestipino, Carmelo, Kumar, Ventrapati Pavan, Raveau, Bernard, Nassif, Vivian, Cordier, Stéphane, Guilmeau, Emmanuel

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Local-Disorder-Induced Low Thermal Conductivity in Degenerate Semiconductor Cu22Sn10S32 by Kumar, Ventrapati Pavan, Lemoine, Pierric, Carnevali, Virginia, Guélou, Gabin, Lebedev, Oleg I, Raveau, Bernard, Al Rahal Al Orabi, Rabih, Fornari, Marco, Candolfi, Christophe, Prestipino, Carmelo, Menut, Denis, Malaman, Bernard, Juraszek, Jean, Suekuni, Koichiro, Guilmeau, Emmanuel

“…S-based semiconductors are attracting attention as environmentally friendly materials for energy-conversion applications because of their structural complexity…”
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Time-Resolved In Situ Neutron Diffraction Study of Cu22Fe8Ge4S32 Germanite: A Guide for the Synthesis of Complex Chalcogenides by Paradis-Fortin, Laura, Lemoine, Pierric, Prestipino, Carmelo, Kumar, Ventrapati Pavan, Raveau, Bernard, Nassif, Vivian, Cordier, Stéphane, Guilmeau, Emmanuel

“…Solid-state synthesis in a sealed silica tube is one of the most popular methods for the production of inorganic materials. Nevertheless, the determination of…”
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Influence of Cationic Ordering on the Lattice Dynamics of Monoclinic Cu5Sn2S7 and Cubic Cu5Sn2S6.65Cl0.35 Sulfides by Candolfi, Christophe, Le Gars, Lucas, Guélou, Gabin, Ventrapati, Pavan Kumar, Prestipino, Carmelo, Guizouarn, Thierry, Pasturel, Mathieu, Levinský, Petr, Lemoine, Pierric, Raveau, Bernard, Shen, Xingchen, Lebedev, Oleg I., Berrod, Quentin, Zanotti, Jean-Marc, Guilmeau, Emmanuel

“…Cu2SnS3 is the parent compound of a series of phases in the Cu2+x Sn1–x S3 section (0 ≤ x ≤ 0.15) of the ternary Cu–Sn–S phase diagram, the crystal structure…”
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Long-Range Cationic Order Collapse Triggered by S/Cl Mixed-Anion Occupancy Yields Enhanced Thermoelectric Properties in Cu 5 Sn 2 S 7 by Guélou, Gabin, Pavan Kumar, Ventrapati, Carnevali, Virginia, Lebedev, Oleg I., Raveau, Bernard, Couder, Christophe, Prestipino, Carmelo, Lemoine, Pierric, Malaman, Bernard, Juraszek, Jean, Candolfi, Christophe, Lenoir, Bertrand, Al Rahal Al Orabi, Rabih, Fornari, Marco, Guilmeau, Emmanuel

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Local-Disorder-Induced Low Thermal Conductivity in Degenerate Semiconductor Cu 22 Sn 10 S 32 by Kumar, Ventrapati Pavan, Lemoine, Pierric, Carnevali, Virginia, Guélou, Gabin, Lebedev, Oleg I., Raveau, Bernard, Al Rahal Al Orabi, Rabih, Fornari, Marco, Candolfi, Christophe, Prestipino, Carmelo, Menut, Denis, Malaman, Bernard, Juraszek, Jean, Suekuni, Koichiro, Guilmeau, Emmanuel

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Copper-Rich Thermoelectric Sulfides: Size-Mismatch Effect and Chemical Disorder in the [TS 4 ]Cu 6 Complexes of Cu 26 T 2 Ge 6 S 32 (T=Cr, Mo, W) Colusites by Pavan Kumar, Ventrapati, Guélou, Gabin, Lemoine, Pierric, Raveau, Bernard, Supka, Andrew R, Al Rahal Al Orabi, Rabih, Fornari, Marco, Suekuni, Koichiro, Guilmeau, Emmanuel

“…Herein, we investigate the Mo and W substitution for Cr in synthetic colusite, Cu Cr Ge S . Primarily, we elucidate the origin of extremely low electrical…”
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Engineering Transport Properties in Interconnected Enargite‐Stannite Type Cu2+xMn1−xGeS4 Nanocomposites by Pavan Kumar, V., Passuti, S., Zhang, B., Fujii, S., Yoshizawa, K., Boullay, P., Le Tonquesse, S., Prestipino, C., Raveau, B., Lemoine, P., Paecklar, A., Barrier, N., Zhou, X., Yoshiya, M., Suekuni, K., Guilmeau, E.

“…Understanding the mechanisms that connect heat and electron transport with crystal structures and defect chemistry is fundamental to develop materials with…”
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