CdSe/ZnS Quantum Dot-to-ZnO Nanowires Charge Transfer Dynamics for Enhanced Efficiency Quantum Dot-Sensitized Solar Cells

2014 ◽  
Vol 1638 ◽  
Author(s):  
Bahareh Sadeghimakki ◽  
Navid Mohammad Sadeghi. Jahed ◽  
Bita Janfeshan ◽  
Shadi Dashmiz ◽  
Siva Sivoththaman
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Charge Transfer ◽  
Quantum Dot ◽  
High Performance ◽  
Zno Nanowires ◽  
Average Lifetime ◽  
Charge Transfer Dynamics ◽  
Light Absorbers ◽  
Sensitized Solar Cells

ABSTRACTCore-shell quantum dots (QDs) with enhanced photostability compared with bare QDs are promising light absorbers for solar cell applications. In this work, electron injection from excited CdSe/ZnS QDs to Zinc Oxide (ZnO) nanowires (NWs) prepared by two techniques were demonstrated. Arrays of ZnO NWs were fabricated by hydrothermal growth and etching. ZnO NWs were sensitized with hydrophobically ligated colloidal CdSe/ZnS QDs. The electron transfer dynamic in QD/ZnO NW architecture was examined using photoluminescence (PL) and decay lifetime analyses. The quenching of the QD emission peak and lowered average lifetime in QD/ZnO NW architecture confirms the deactivation of the excited QDs via electron transfer to ZnO NWs. Electron transfer was enhanced by using smaller QDs. This study provides insight on charge transfer dynamics at the QD/ZnO NW interface in order to engineer high performance quantum dot sensitized solar cells (QDSSCs).

scholarly journals CuSCN Nanowires as Electrodes for p-Type Quantum Dot Sensitized Solar Cells: Charge Transfer Dynamics and Alumina Passivation

2018 ◽  
Vol 122 (9) ◽  
pp. 5161-5170 ◽  
Author(s):  
Muhammad T. Sajjad ◽  
Jinhyung Park ◽  
Dorian Gaboriau ◽  
Jonathon R. Harwell ◽  
Fabrice Odobel ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Quantum Dot ◽  
Charge Transfer Dynamics ◽  
P Type ◽  
Sensitized Solar Cells

High-Performance Solid-State PbS Quantum Dot-Sensitized Solar Cells Prepared by Introduction of Hybrid Perovskite Interlayer

2017 ◽  
Vol 9 (47) ◽  
pp. 41104-41110 ◽  
Author(s):  
Jin Hyuck Heo ◽  
Min Hyuk Jang ◽  
Min Ho Lee ◽  
Dong Hee Shin ◽  
Do Hun Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Quantum Dot ◽  
High Performance ◽  
Hybrid Perovskite ◽  
Sensitized Solar Cells ◽  
Pbs Quantum Dot

scholarly journals ZnS/SiO2 Passivation Layer for High-Performance of TiO2/CuInS2 Quantum Dot Sensitized Solar Cells

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1931
Author(s):  
Hee-Je Kim ◽  
Jin-Ho Bae ◽  
Hyunwoong Seo ◽  
Masaharu Shiratani ◽  
Chandu Venkata Veera Muralee Gopi
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Charge Recombination ◽  
Open Circuit ◽  
Passivation Layer ◽  
Voltage Decay ◽  
Sensitized Solar Cells ◽  
Η Value

Suppressing the charge recombination at the interface of photoanode/electrolyte is the crucial way to improve the quantum dot sensitized solar cells (QDSSCs) performance. In this scenario, ZnS/SiO2 blocking layer was deposited on TiO2/CuInS2 QDs to inhibit the charge recombination at photoanode/electrolyte interface. As a result, the TiO2/CuInS2/ZnS/SiO2 based QDSSCs delivers a power conversion efficiency (η) value of 4.63%, which is much higher than the TiO2/CuInS2 (2.15%) and TiO2/CuInS2/ZnS (3.23%) based QDSSCs. Impedance spectroscopy and open circuit voltage decay analyses indicate that ZnS/SiO2 passivation layer on TiO2/CuInS2 suppress the charge recombination at the interface of photoanode/electrolyte and enhance the electron lifetime.

Achieving copper sulfide leaf like nanostructure electrode for high performance supercapacitor and quantum-dot sensitized solar cells

2018 ◽  
Vol 435 ◽  
pp. 666-675 ◽  
Author(s):  
Ikkurthi Kanaka Durga ◽  
S. Srinivasa Rao ◽  
Araveeti Eswar Reddy ◽  
Chandu V.V.M. Gopi ◽  
Hee-Je Kim
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Copper Sulfide ◽  
High Performance ◽  
Sensitized Solar Cells

High performance of TiO2/CdS quantum dot sensitized solar cells with a Cu–ZnS passivation layer

2017 ◽  
Vol 41 (5) ◽  
pp. 1914-1917 ◽  
Author(s):  
Young-Seok Lee ◽  
Chandu V. V. M. Gopi ◽  
Araveeti Eswar Reddy ◽  
Chandu Nagaraju ◽  
Hee-Je Kim
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
High Performance ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Passivation Layer ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells

A Cu–ZnS passivation layer effectively suppresses the charge recombination and increases the light harvesting in QDSSCs.

scholarly journals Cauliflower-like SnO2 hollow microspheres as anode and carbon fiber as cathode for high performance quantum dot and dye-sensitized solar cells

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3296 ◽  
Author(s):  
Veerappan Ganapathy ◽  
Eui-Hyun Kong ◽  
Yoon-Cheol Park ◽  
Hyun Myung Jang ◽  
Shi-Woo Rhee
Keyword(s):  
Solar Cells ◽  
Carbon Fiber ◽  
Quantum Dot ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Hollow Microspheres ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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