Photodeposition of Metal Sulfide Quantum Dots on Titanium(IV) Dioxide and its Applications

2011 ◽  
Vol 1352 ◽  
Author(s):  
Hiroaki Tada
Keyword(s):  
Quantum Dots ◽  
Irradiation Time ◽  
Low Cost ◽  
Metal Sulfide ◽  
Metal Sulfides ◽  
Nanocrystalline Films ◽  
Short Period ◽  
Sensitized Solar Cells ◽  
Excellent Reproducibility

ABSTRACTIn situ photodeposition techniques taking advantage of the TiO2 photocatalysis have been developed for coupling metal sulfide quantum dots (QDs) and TiO2 at a nonoscale. The coupled metal sulfide-TiO2 systems possess the following characteristics: (I) a large amount of metal sulfides can be directly formed on TiO2 during a fairly short period with excellent reproducibility, (II) the band energies of metal sulfides QDs are widely tunable by irradiation time, (III) metal sulfide QDs can be deposited on not only the external surfaces but also the inner ones of mesoporous TiO2 nanocrystalline films without pore-blocking, (IV) the simple solution-based technique at low temperature enables the low-cost production, (V) this technique has a wide possibility for coupling TiO2 and narrow gap metal sulfides. These unique features produce the excellent performances of the resulting heteronanojunaction systems as the photoanodes for QD-sensitized solar cells.

ZnO nanorods decorated with metal sulfides as stable and efficient counter-electrode materials for high-efficiency quantum dot-sensitized solar cells

2016 ◽  
Vol 4 (21) ◽  
pp. 8161-8171 ◽  
Author(s):  
Chandu V. V. M. Gopi ◽  
Mallineni Venkata-Haritha ◽  
Young-Seok Lee ◽  
Hee-Je Kim
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Counter Electrode ◽  
Electrode Materials ◽  
High Efficiency ◽  
Zno Nanorods ◽  
Metal Sulfide ◽  
Metal Sulfides ◽  
Sensitized Solar Cells

Metal sulfide decorated with ZnO NRs (ZnO/CoS, ZnO/NiS, ZnO/CuS and ZnO/PbS) were fabricated and used as efficient CEs for QDSSCs.

Decoration of upconversion nanocrystals with metal sulfide quantum dots by a universal in situ controlled growth strategy

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3977-3987 ◽  
Author(s):  
Kaimin Du ◽  
Pengpeng Lei ◽  
Manli Zhang ◽  
Xuan Gao ◽  
Shuang Yao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Sulfide ◽  
Growth Strategy ◽  
Controlled Growth ◽  
Upconversion Nanocrystals

Multifunctional NaYF4:Yb/Er@CS@Mn+S (M = Ag, Cu, Cd) nanocomposites could be prepared by a universal in situ controlled growth strategy.

Quantum Dot-Sensitized Solar Cells via Integrated Experimental and Modeling Study

2019 ◽  
Vol 16 (2) ◽  
pp. 436-440
Author(s):  
Lekshmi Gangadhar ◽  
Anusha Kannan ◽  
P. K. Praseetha
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Low Cost ◽  
Semiconductor Nanocrystals ◽  
Green Energy ◽  
Research Areas ◽  
Sensitized Solar Cells ◽  
Modeling Study

The solar energy is one of the potential renewable green energy source considering the availability of sunlight in abundance and the need for clean and renewable source of energy. Quantum dots are semiconductor nanocrystals having considerable interest in photovoltaic research areas. Cadmium sulfide-sensitized solar cells are synthesized by Chemical bath deposition and titanium nanowires were fabricated by hydrothermal method. The synthesized CdS quantum dots are sensitized to nanoporous TiO2 films to form quantum dots-sensitized solar cell applications. The introduction of TNWs enables the electrolyte to penetrate easily inside the film which increases the interfacial contact between the nanowires, the quantum dots and the electrolyte results in improvement in efficiency of solar cell. The goal of our research is to understand the fundamental physics and performance of quantum dot-sensitized solar cells with improved photoconversion efficiency at the low cost based on selection of TiO2 nanostructures, sensitizers and electrodes through an integrated experimental and modeling study.

Optoelectronic and photovoltaic properties of graphene quantum dot–polyaniline nanostructures

2015 ◽  
Vol 3 (41) ◽  
pp. 20736-20748 ◽  
Author(s):  
Nabasmita Maity ◽  
Atanu Kuila ◽  
Sandip Das ◽  
Debasish Mandal ◽  
Arnab Shit ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Power Conversion ◽  
Graphene Quantum Dots ◽  
Dye Sensitized Solar Cells ◽  
Photovoltaic Properties ◽  
Aqueous Dispersions ◽  
Graphene Quantum Dot ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In aqueous dispersions of graphene quantum dots (GQDs), aniline is in situ polymerized to produce polyaniline-GQDs hybrids and dye-sensitized solar cells fabricated with the hybrids indicate highest power conversion efficiency of 3.12%.

CdTe based quantum dot sensitized solar cells with efficiency exceeding 7% fabricated from quantum dots prepared in aqueous media

2016 ◽  
Vol 4 (42) ◽  
pp. 16553-16561 ◽  
Author(s):  
Junwei Yang ◽  
Xinhua Zhong
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Low Temperature ◽  
Quantum Dot ◽  
Low Cost ◽  
Aqueous Media ◽  
Sensitized Solar Cells

A low-temperature aqueous route was adopted to fabricate low-cost CdTe based quantum dot sensitized solar cells with a best performance of 7.24%.

CdS quantum dots grown by in situ chemical bath deposition for quantum dot-sensitized solar cells

2011 ◽  
Vol 110 (4) ◽  
pp. 044313 ◽  
Author(s):  
Sung Woo Jung ◽  
Jae-Hong Kim ◽  
Hyunsoo Kim ◽  
Chel-Jong Choi ◽  
Kwang-Soon Ahn
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Chemical Bath Deposition ◽  
Cds Quantum Dots ◽  
Sensitized Solar Cells

In situ direct growth of single crystalline metal (Co, Ni) selenium nanosheets on metal fibers as counter electrodes toward low-cost, high-performance fiber-shaped dye-sensitized solar cells

Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 2304-2308 ◽  
Author(s):  
Liang Chen ◽  
Hexing Yin ◽  
Yong Zhou ◽  
Hui Dai ◽  
Tao Yu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
High Performance Fiber ◽  
Direct Growth ◽  
Crystalline Metal ◽  
Sensitized Solar Cells

Highly crystalline metal (Co, Ni) selenium (Co0.85Se or Ni0.85Se) nanosheets were in situ grown on metal (Co, Ni) fibers (M–M0.85Se).

Comparison of Solid-State Quantum-Dot-Sensitized Solar Cells with ex Situ and in Situ Grown PbS Quantum Dots

2014 ◽  
Vol 118 (45) ◽  
pp. 25853-25862 ◽  
Author(s):  
Askhat N. Jumabekov ◽  
Timothy D. Siegler ◽  
Niklas Cordes ◽  
Dana D. Medina ◽  
Daniel Böhm ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solid State ◽  
Quantum Dot ◽  
Ex Situ ◽  
Sensitized Solar Cells ◽  
Pbs Quantum Dots
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