Journal ArticleDOI
Near-infrared absorbing Cu12Sb4S13 and Cu3SbS4 nanocrystals: synthesis, characterization, and photoelectrochemistry.
Joel van Embden,Joel van Embden,Kay Latham,Noel W. Duffy,Yasuhiro Tachibana,Yasuhiro Tachibana +5 more
Reads0
Chats0
TLDR
The novel synthesis of tetrahedrite copper antimony sulfide (CAS) nanocrystals (Cu12Sb4S13), which display strong absorptions in the visible and NIR, are presented, an excellent new candidate for both thin film and hybrid solar cells and as strong NIR absorbers in general.Abstract:
Herein, we present the novel synthesis of tetrahedrite copper antimony sulfide (CAS) nanocrystals (Cu12Sb4S13), which display strong absorptions in the visible and NIR. Through ligand tuning, the size of the Cu12Sb4S13 NCs may be increased from 6 to 18 nm. Phase purity is achieved through optimizing the ligand chemistry and maximizing the reactivity of the antimony precursor. We provide a detailed investigation of the optical and photoelectrical properties of both tetrahedrite (Cu12Sb4S13) and famatinite (Cu3SbS4) NCs. These NCs were found to have very high absorption coefficients reaching 105 cm–1 and band gaps of 1.7 and 1 eV for tetrahedrite and famatinite NCs, respectively. Ultraviolet photoelectron spectroscopy was employed to determine the band positions. In each case, the Fermi energies reside close to the valence band, indicative of a p-type semiconductor. Annealing of tetrahedrite CAS NC films in sulfur vapor at 350 °C was found to result in pure famatinite NC films, opening the possibility to tu...read more
Citations
More filters
Journal ArticleDOI
Compound Copper Chalcogenide Nanocrystals
TL;DR: This review captures the synthesis, assembly, properties, and applications of copper chalcogenide NCs, which have achieved significant research interest in the last decade due to their compositional and structural versatility.
Journal ArticleDOI
Synthesis of Semiconductor Nanocrystals, Focusing on Nontoxic and Earth-Abundant Materials.
Peter Reiss,Peter Reiss,Marie Carrière,Christophe Lincheneau,Christophe Lincheneau,Louis Vaure,Louis Vaure,Sudarsan Tamang +7 more
TL;DR: This work reviews the synthesis of semiconductor nanocrystals/colloidal quantum dots in organic solvents with special emphasis on earth-abundant and toxic heavy metal free compounds and a comprehensive overview on toxicity studies concerning all types of quantum dots.
Journal ArticleDOI
Defect Engineering in Multinary Earth-Abundant Chalcogenide Photovoltaic Materials
TL;DR: In this article, a review of recent efforts targeting accurate identification and engineering of anti-site disorder in kesterite-based CZTSSe are considered, in an effort to develop promising pathways to avoid antisite disordering and associated band tailing in future highperformance earth-abundant photovoltaic technologies.
Journal ArticleDOI
Origin of surface trap states in CdS quantum dots: relationship between size dependent photoluminescence and sulfur vacancy trap states
Aisea Veamatahau,Bo Jiang,Tom Seifert,Satoshi Makuta,Kay Latham,Masayuki Kanehara,Toshiharu Teranishi,Yasuhiro Tachibana,Yasuhiro Tachibana,Yasuhiro Tachibana +9 more
TL;DR: Results are consistent to conclude that the trap state emission mainly originates from the surface deep trapped electrons at the surface Cd with sulfur vacancy sites.
Journal ArticleDOI
Solar light harvesting with multinary metal chalcogenide nanocrystals
TL;DR: The paper reviews the state of the art in the synthesis of multinary (ternary, quaternary and more complex) metal chalcogenide nanocrystals (NCs) and their applications as a light absorbing or an auxiliary component of light-harvesting systems.
References
More filters
Journal ArticleDOI
Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Sc, Ti, V, Cu and Zn
TL;DR: Biesinger et al. as mentioned in this paper proposed a more consistent and effective approach to curve fitting based on a combination of standard spectra from quality reference samples, a survey of appropriate literature databases and/or a compilation of literature references and specific literature references where fitting procedures are available.
Journal ArticleDOI
High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys
Bed Poudel,Qing Hao,Yi Ma,Yucheng Lan,Austin J. Minnich,Bo Yu,Xiao Yan,Dezhi Wang,Andrew Muto,Daryoosh Vashaee,Xiaoyuan Chen,Jun-Ming Liu,Mildred S. Dresselhaus,Gang Chen,Zhifeng Ren +14 more
TL;DR: Electrical transport measurements, coupled with microstructure studies and modeling, show that the ZT improvement is the result of low thermal conductivity caused by the increased phonon scattering by grain boundaries and defects, which makes these materials useful for cooling and power generation.
Journal Article
High Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys.
Bed Poudel,Qing Hao,Yi Ma,Austin J. Minnich,Andrew Muto,Yucheng Lan,Bo Yu,Xiao Yan,Dezhi Wang,Daryoosh Vashaee,X.Y. Chen,Dresselhaus,Gang Chen,Zhifeng Ren +13 more
Journal ArticleDOI
Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters
TL;DR: In this paper, three major ways to utilize semiconductor dots in solar cell include (i) metal−semiconductor or Schottky junction photovoltaic cell, (ii) polymer−smiconductor hybrid solar cell, and (iii) quantum dot sensitized solar cell.
Journal ArticleDOI
Air-Stable All-Inorganic Nanocrystal Solar Cells Processed from Solution
Ilan Gur,N. A. Fromer,N. A. Fromer,Michael L. Geier,Michael L. Geier,A. Paul Alivisatos,A. Paul Alivisatos +6 more
TL;DR: An ultrathin donor-acceptor solar cell composed entirely of inorganic nanocrystals spin-cast from solution is introduced, elucidates a class of photovoltaic devices with potential for stable, low-cost power generation.