scholarly journals Towards implementing hierarchical porous zeolitic imidazolate frameworks in dye-sensitized solar cells

2019 ◽  
Vol 6 (7) ◽  
pp. 190723 ◽  
Author(s):  
Hani Nasser Abdelhamid ◽  
Ahmed M. El-Zohry ◽  
Jiayan Cong ◽  
Thomas Thersleff ◽  
Martin Karlsson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Area ◽  
Pore Volume ◽  
Dye Sensitized Solar Cells ◽  
Zeolitic Imidazolate Frameworks ◽  
One Pot ◽  
Dye Sensitized ◽  
Hierarchical Porous ◽  
Sensitized Solar Cells

A one-pot method for encapsulation of dye, which can be applied for dye-sensitized solar cells (DSSCs), and synthesis of hierarchical porous zeolitic imidazolate frameworks (ZIF-8), is reported. The size of the encapsulated dye tunes the mesoporosity and surface area of ZIF-8. The mesopore size, Langmuir surface area and pore volume are 15 nm, 960–1500 m 2 · g −1 and 0.36–0.61 cm 3 · g −1 , respectively. After encapsulation into ZIF-8, the dyes show longer emission lifetimes (greater than 4–8-fold) as compared to the corresponding non-encapsulated dyes, due to suppression of aggregation, and torsional motions.

Facile preparation of hierarchical TiO2nanowire–nanoparticle/nanotube architecture for highly efficient dye-sensitized solar cells

2015 ◽  
Vol 3 (40) ◽  
pp. 20366-20374 ◽  
Author(s):  
Nianqing Fu ◽  
Yan Liu ◽  
Yanchun Liu ◽  
Wei Lu ◽  
Limin Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Surface Area ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
One Step ◽  
Facile Preparation ◽  
Sensitized Solar Cells ◽  
Light Scattering Effect

Hierarchical TiO2architecture with a remarkably improved surface area and light scattering effect was preparedviaone-step post-treatment for dye-sensitized solar cells, achieving a high efficiency of 8.82%.

scholarly journals Photovoltaic Performance of Dye-Sensitized Solar Cells Containing ZnO Microrods

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1645 ◽  
Author(s):  
Seong Il Cho ◽  
Hye Kyeong Sung ◽  
Sang-Ju Lee ◽  
Wook Hyun Kim ◽  
Dae-Hwan Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Area ◽  
Electrochemical Impedance ◽  
Collection Efficiency ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Growth Time ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

At an elevated temperature of 90 °C, a chemical bath deposition using an aqueous solution of Zn(NO3)2·6H2O and (CH2)6N4 resulted in the formation of both nanoflowers and microrods of ZnO on F-doped SnO2 glass with a seed layer. The nanoflowers and microrods were sensitized with dyes for application to the photoelectrodes of dye-sensitized solar cells (DSSCs). By extending the growth time of ZnO, the formation of nanoflowers was reduced and the formation of microrods favored. As the growth time was increased from 4 to 6 and then to 8 h, the open circuit voltage (Voc) values of the DSSCs were increased, whilst the short circuit current (Jsc) values varied only slightly. Changes in the dye-loading amount, dark current, and electrochemical impedance were monitored and they revealed that the increase in Voc was found to be due to a retardation of the charge recombination between photoinjected electrons and I3− ions and resulted from a reduction in the surface area of ZnO microrods. A reduced surface area decreased the dye contents adsorbed on the ZnO microrods, and thereby decreased the light harvesting efficiency (LHE). An increase in the electron collection efficiency attributed to the suppressed charge recombination counteracted the decreased LHE, resulting in comparable Jsc values regardless of the growth time.

One-pot synthesis of ZnO nanoparticles and submicron-aggregates for dye-sensitized solar cells

2015 ◽  
Vol 139 ◽  
pp. 433-436 ◽  
Author(s):  
Parand Rostami ◽  
Ali Nemati ◽  
Mahdi Malekshahi Byranvand ◽  
Raheleh Mohammadpour ◽  
Hamidreza Faridi
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Dye Sensitized Solar Cells ◽  
One Pot ◽  
Dye Sensitized ◽  
One Pot Synthesis ◽  
Sensitized Solar Cells

Increasing the surface area of TiO2 nanotube membranes by filling the channels with onion type carbon materials and TiCl4 for dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 74107-74114 ◽  
Author(s):  
Ho-sub Kim ◽  
Jung Sang Suh
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Surface Area ◽  
Carbon Materials ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Nanotube Membranes ◽  
Inner Surface ◽  
Sensitized Solar Cells

We have significantly enhanced the power conversion efficiency of dye-sensitized solar cells based on TiO2 nanotube membranes by increasing the inner surface area of the channels.

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