Control of morphology and defect density in zinc oxide for improved dye-sensitized solar cells

2016 ◽  
Vol 18 (44) ◽  
pp. 30475-30483 ◽  
Author(s):  
Seul Ah Kim ◽  
Muhammad Awais Abbas ◽  
Lanlee Lee ◽  
Byungwuk Kang ◽  
Hahkjoon Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Electrochemical Impedance ◽  
Defect Density ◽  
Dye Sensitized Solar Cells ◽  
Surface Characteristics ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Voltage Decay ◽  
Sensitized Solar Cells

The surface characteristics of the ZnO photoelectrode in dye-sensitized solar cells are elucidated by in-depth electrochemical analyses including open-circuit voltage decay measurements and electrochemical impedance spectroscopy.

Investigating the Role of Dye Dipole on Open Circuit Voltage in Solid-State Dye-Sensitized Solar Cells

2011 ◽  
Vol 50 (6) ◽  
pp. 06GF08 ◽  
Author(s):  
Shyam S. Pandey ◽  
Kyung-Young Lee ◽  
Azwar Hayat ◽  
Yuhei Ogomi ◽  
Shuzi Hayase
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Open Circuit Voltage ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Origin of Enhancement in Open-Circuit Voltage by Adding ZnO to Nanocrystalline SnO2in Dye-Sensitized Solar Cells

2005 ◽  
Vol 109 (38) ◽  
pp. 17892-17900 ◽  
Author(s):  
Daisuke Niinobe ◽  
Yuki Makari ◽  
Takayuki Kitamura ◽  
Yuji Wada ◽  
Shozo Yanagida
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

2019 ◽  
Vol 3 (1) ◽  
pp. 96-100 ◽  
Author(s):  
Tijmen M. A. Bakker ◽  
Simon Mathew ◽  
Joost N. H. Reek
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Redox Couples ◽  
P Type ◽  
Sensitized Solar Cells

The development of new redox couples provides a clear strategy to improve power conversion efficiency (PCE) in p-type dye-sensitized solar cells (p-DSSCs) through enabling improvements in open-circuit voltage (VOC).

scholarly journals There Is a Future for N-Heterocyclic Carbene Iron(II) Dyes in Dye-Sensitized Solar Cells: Improving Performance through Changes in the Electrolyte

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4181 ◽  
Author(s):  
Mariia Karpacheva ◽  
Vanessa Wyss ◽  
Catherine E. Housecroft ◽  
Edwin C. Constable
Keyword(s):  
Solar Cells ◽  
Alkyl Chain ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Ion Concentration ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

By systematic tuning of the components of the electrolyte, the performances of dye-sensitized solar cells (DSCs) with an N-heterocyclic carbene iron(II) dye have been significantly improved. The beneficial effects of an increased Li+ ion concentration in the electrolyte lead to photoconversion efficiencies (PCEs) up to 0.66% for fully masked cells (representing 11.8% relative to 100% set for N719) and an external quantum efficiency maximum (EQEmax) up to approximately 25% due to an increased short-circuit current density (JSC). A study of the effects of varying the length of the alkyl chain in 1-alkyl-3-methylimidazolium iodide ionic liquids (ILs) shows that a longer chain results in an increase in JSC with an overall efficiency up to 0.61% (10.9% relative to N719 set at 100%) on going from n-methyl to n-butyl chain, although an n-hexyl chain leads to no further gain in PCE. The results of electrochemical impedance spectroscopy (EIS) support the trends in JSC and open-circuit voltage (VOC) parameters. A change in the counterion from I− to [BF4]− for 1-propyl-3-methylimidazolium iodide ionic liquid leads to DSCs with a remarkably high JSC value for an N-heterocyclic carbene iron(II) dye of 4.90 mA cm−2, but a low VOC of 244 mV. Our investigations have shown that an increased concentration of Li+ in combination with an optimized alkyl chain length in the 1-alkyl-3-methylimidazolium iodide IL in the electrolyte leads to iron(II)-sensitized DSC performances comparable with those of containing some copper(I)-based dyes.

scholarly journals Aluminum-Doped SnO2Hollow Microspheres as Photoanode Materials for Dye-Sensitized Solar Cells

2016 ◽  
Vol 2016 ◽  
pp. 1-5
Author(s):  
Binghua Xu ◽  
Zeng Chen ◽  
Shengjun Li
Keyword(s):  
Solar Cells ◽  
Dark Current ◽  
Open Circuit Voltage ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Impedance Spectra ◽  
Al Doping ◽  
Dye Sensitized ◽  
Recombination Reactions ◽  
Sensitized Solar Cells

Al doped SnO2microspheres were prepared through hydrothermal method. As-prepared SnO2microspheres were applied as photoanode materials in dye-sensitized solar cells (DSCs). The properties of the assembled DSCs were significantly improved, especially the open-circuit voltage. The reason for the enhancement was explored through the investigation of dark current curves and electrochemistry impedance spectra. These results showed that the Al doping significantly increased the reaction resistance of recombination reactions and restrained the dark current. The efficient lifetime of photoexcited electrons was also obviously lengthened.

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