Size-Dependent Synthesis of Cu12Sb4S13Nanocrystals with Bandgap Tunability

Chen, Keqiang; Zhou, Jing; Chen, Wen; Zhou, Peng; He, Fan; Liu, Yueli

doi:10.1002/ppsc.201500088

Cited by 35 publications

(37 citation statements)

References 36 publications

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“…Both of them are critical to optimize transport properties within such nanomaterials. 26 Thus far, colloidal Cu 3 SbS 4 [28][29][30] and Cu 12 Sb 4 S 13 [29][30][31] nanocrystals (NCs) have been primarily used for photoelectrochemical studies. Few reports have also detailed the production of bulk nanostructured CASe.…”

Section: Introductionmentioning

confidence: 99%

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

et al. 2017

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Copper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and thermoelectrics (TE). In such applications, the use of solution-processed nanocrystal (NC) to produce thin films or bulk nanomaterials has associated several potential advantages, such as high material yield and throughput, and composition control with unmatched spatial resolution and cost. Here we report on the production of Cu3SbSe4 (CASe) NCs with tuned amounts of Sn and Bi dopants. After proper ligand removal, as monitored by nuclear magnetic resonance and infrared spectroscopies, these NCs were used to produce dense CASe bulk nanomaterials for solid state TE energy conversion. By adjusting the amount of extrinsic dopants, dimensionless TE figures of merit (ZT) up to 1.26 at 673 K were reached. Such high ZT values are related to an optimized carrier concentration by Sn doping, a minimized lattice thermal conductivity due to efficient phonon scattering at point defects and grain boundaries, and to an increase of the Seebeck coefficient obtained by a modification of the electronic band structure with the Bi doping. Nanomaterials were further employed to fabricate ring-shaped TE generators to be coupled to hot pipes and which provided 20 mV and 1 mW per TE element when exposed to a 160 °C temperature gradient. The simple design and good thermal contact associated with the ring geometry and the potential low cost of the material solution processing may allow the fabrication of TE generators with short payback times.Peer ReviewedPostprint (author's final draft

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Section: Introductionmentioning

confidence: 99%

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

et al. 2017

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“…We synthesized Cu 12 Sb 4 S 13 QDs by the hot-injection method according to our previous work. 38 A 1.5 mmol portion of CuI and 30 mL of oleylamine were added into a 50 mL three-necked flask and heated to 130 °C in a nitrogen atmosphere. When the temperature became steady, 0.5 mmol of SbCl 3 was added into the flask.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Cu₁₂Sb₄S₁₃ Quantum Dots with Ligand Exchange as Hole Transport Materials in All-Inorganic Perovskite CsPbI₃ Quantum Dot Solar Cells

Liu

Zhao

Yang

et al. 2020

ACS Appl. Energy Mater.

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Perovskite solar cells (PSCs) have developed rapidly in the past 10 years. However, they are faced with a huge challenge for stability improvement because of the volatile organic components in the light absorption and hole transporting layer. Herein, we fabricate all-inorganic PSCs with the structure of FTO/c-TiO 2 /m-TiO 2 /CsPbI 3 quantum dots (QDs)/Cu 12 Sb 4 S 13 QDs/Au to improve device stability. To enhance the photovoltaic performance of PSCs, the surface oleylamine ligands of Cu 12 Sb 4 S 13 QDs with 3-mercaptopropionic acid are exchanged, as the enhanced electronic coupling and reduced band gap are realized after the ligands exchange. Cu 12 Sb 4 S 13 QD based PSCs exhibit a PCE of 10.02%, approaching that of the spiro-MeOTAD based PSCs (12.14%). A high shortcircuit current density of 18.28 mA cm −2 is achieved because of the enhanced light absorption and excellent hole extraction ability of Cu 12 Sb 4 S 13 QDs. Moreover, Cu 12 Sb 4 S 13 QD based PSCs exhibit the improved long-term stability and retain 94% of their initial PCE after storage in ambient air for 360 h.

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“…[ 1‐5 ] In recent years, solution‐processed semiconductors have achieved rapid progresses due to their high‐performance and low‐cost compared with the commercially available semiconductors such as silicon and gallium arsenide. [ 6–32 ] Especially, perovskites, a group of the most promising candidates, [ 33–39 ] have already shown superior performances in many applications including solar cells, light sources, and photodetectors, [ 40–46 ] attributed to their exceptional optoelectronic properties such as large charge carrier diffusion length, long carrier lifetime, high quantum yield efficiency, and good wavelength tunability. [ 47 ] Moreover, perovskites have shown great potential in solid‐state‐light sources and are supposed to be an effective way to realize solution‐processed laser diodes.…”

Section: Introductionmentioning

confidence: 99%

Stability of Perovskite Light Sources: Status and Challenges

Chen

Cui

et al. 2020

Advanced Optical Materials

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Stable perovskites light sources with long‐term stability are of great significance for future commercial applications. In this review, recent advances of the degradation models for perovskites and strategies for enhancing the stability of the corresponding light sources are summarized. Improving the stability and quality of perovskite materials is a common way for developing stable perovskite light sources. For strengthening the stability of perovskite light‐emitting diodes, approaches such as surface and interface engineering and employing more stable hole injection layers are effective. To enhance the stability of perovskite amplified spontaneous emission and lasers, methods such as protecting perovskites by materials with high intrinsic thermal conductivity and high stability, better thermal managements, and reducing the threshold carrier densities are useful. This work will be helpful for further prompting the performances, especially the stability of perovskite light sources in this fantastic field.

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Size-Dependent Synthesis of Cu₁₂Sb₄S₁₃Nanocrystals with Bandgap Tunability

Cited by 35 publications

References 36 publications

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Cu₁₂Sb₄S₁₃ Quantum Dots with Ligand Exchange as Hole Transport Materials in All-Inorganic Perovskite CsPbI₃ Quantum Dot Solar Cells

Stability of Perovskite Light Sources: Status and Challenges

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Size-Dependent Synthesis of Cu12Sb4S13Nanocrystals with Bandgap Tunability

Cited by 35 publications

References 36 publications

Solution-based synthesis and processing of Sn- and Bi-doped Cu3SbSe4nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Solution-based synthesis and processing of Sn- and Bi-doped Cu3SbSe4nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Cu12Sb4S13 Quantum Dots with Ligand Exchange as Hole Transport Materials in All-Inorganic Perovskite CsPbI3 Quantum Dot Solar Cells

Stability of Perovskite Light Sources: Status and Challenges

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Size-Dependent Synthesis of Cu₁₂Sb₄S₁₃Nanocrystals with Bandgap Tunability

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Solution-based synthesis and processing of Sn- and Bi-doped Cu₃SbSe₄nanocrystals, nanomaterials and ring-shaped thermoelectric generators

Cu₁₂Sb₄S₁₃ Quantum Dots with Ligand Exchange as Hole Transport Materials in All-Inorganic Perovskite CsPbI₃ Quantum Dot Solar Cells