Characterization of photovoltaic devices for indoor light harvesting and customization of flexible dye solar cells to deliver superior efficiency under artificial lighting

2015 ◽  
Vol 156 ◽  
pp. 413-422 ◽  
Author(s):  
Francesca De Rossi ◽  
Tadeo Pontecorvo ◽  
Thomas M. Brown
Keyword(s):  
Solar Cells ◽  
Light Harvesting ◽  
Photovoltaic Devices ◽  
Artificial Lighting ◽  
Dye Solar Cells

Performance of TiO2 Aggregates-Based Dye Solar Cells

2013 ◽  
Vol 737 ◽  
pp. 137-144 ◽  
Author(s):  
Norani Muti Mohamed ◽  
Siti Nur Azella Zaine
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Water Content ◽  
Calcination Temperature ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Dye Solar Cells ◽  
Harvesting Efficiency ◽  
Light Harvesting Efficiency ◽  
20 Nm

TiO2 aggregates-based dye solar cells (DSCs) have gained an increasing interest due to their better light harvesting efficiency as a result of enhanced light scattering effect from the submicron spherical aggregates that can generate more electrons and the high internal surface area for dye chemisorption provided by nanocrystallites which made up the aggregates. Optimized TiO2 aggregates (0.45 µm) composing of nanocrystallites (10-40 nm) with desired physicochemical properties for enhanced overall light conversion efficiency of DSC were synthesized by varying the calcination temperature and water content in the hydrolysis of titanium alkoxide in ethanol. TiO2 aggregates obtained were characterized using FESEM, XRD and UV-Vis spectroscopy. The assembled DSCs were then evaluated using solar simulator under AM 1.5 (100 mW/cm2) simulated sunlight. Nanocrystallites were found to have an increasing size of 12 nm to 36 nm with increasing calcination temperature of 400C to 600C. Sample of aggregates calcined at 500C recorded the highest efficiency (4.456%) as the 20-nm nanocrystallites produced is considered to be the optimum size for dye absorption. With higher water content in the hydrolysis process, the aggregates lose their spherical shapes resulting in lower absorption intensity indicating the occurrence of low light scattering in the TiO2 film. Highest conversion efficiency was observed for DSC that used well-defined spherical TiO2 aggregates composing of 20-nm nanocrystallites which were synthesized using ethanol with low water content (0.9 vol%) followed by calcination at 500C. Thus, optimized TiO2 nanocrystallites which form spherical aggregate is critical in order to improve light harvesting efficiency of DSCs.

scholarly journals Light Harvesting: Multidirectional Light-Harvesting Enhancement in Dye Solar Cells by Surface Patterning (Advanced Optical Materials 9/2014)

2014 ◽  
Vol 2 (9) ◽  
pp. 804-804
Author(s):  
Carmen López-López ◽  
Silvia Colodrero ◽  
Alberto Jiménez-Solano ◽  
Gabriel Lozano ◽  
Reyes Ortiz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Optical Materials ◽  
Light Harvesting ◽  
Surface Patterning ◽  
Dye Solar Cells

Fabrication and characterization of mesoporous SnO2/ZnO-composite electrodes for efficient dye solar cells

2004 ◽  
Vol 14 (3) ◽  
pp. 385 ◽  
Author(s):  
Seigo Ito ◽  
Yuki Makari ◽  
Takayuki Kitamura ◽  
Yuji Wada ◽  
Shozo Yanagida
Keyword(s):  
Solar Cells ◽  
Composite Electrodes ◽  
Dye Solar Cells ◽  
Fabrication And Characterization ◽  
Mesoporous Sno2

scholarly journals Characterization of Photochromic Dye Solar Cells Using Small-Signal Perturbation Techniques

2021 ◽  
Author(s):  
Antonio J. Riquelme ◽  
Valid Mwatati Mwalukuku ◽  
Patricia Sánchez-Fernández ◽  
Johan Liotier ◽  
Renán Escalante ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Signal ◽  
Perturbation Techniques ◽  
Photochromic Dye ◽  
Dye Solar Cells

Synchrotron-based spectroscopy for the characterization of surfaces and interfaces in chalcopyrite solar cells

2005 ◽  
Vol 865 ◽  
Author(s):  
Iver Lauermann ◽  
Paul Pistor ◽  
Immo Kötschau ◽  
Marcus Bär
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
State Of The Art ◽  
Depth Information ◽  
Spectroscopic Methods ◽  
Photovoltaic Devices ◽  
Buried Interfaces ◽  
Surfaces And Interfaces

AbstractIn this paper we describe synchrotron based, state-of-the-art spectroscopic methods for the analysis of surfaces and interfaces in thin film photovoltaic devices, their merits and their limitations. Using results obtained with the “CISSY” end station at the BESSY synchrotron in Berlin, Germany, we show how surface sensitive Synchrotron excitedX-rayPhotoelectronSpectroscopy(SXPS)andSoftX-rayEmissionSpectroscopy (SXES), which yields compositional and chemical depth information in the ten to hundred nm scale, have increased our knowledge of the chemistry of surfaces and buried interfaces of these systems.

scholarly journals Colloidal Sb2S3nanocrystals: synthesis, characterization and fabrication of solid-state semiconductor sensitized solar cells

2016 ◽  
Vol 4 (18) ◽  
pp. 6809-6814 ◽  
Author(s):  
Mutalifu Abulikemu ◽  
Silvano Del Gobbo ◽  
Dalaver H. Anjum ◽  
Mohammad Azad Malik ◽  
Osman M. Bakr
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Light Harvesting ◽  
Photovoltaic Devices ◽  
Injection Method ◽  
Antimony Sulfide ◽  
Hot Injection ◽  
Sensitized Solar Cells ◽  
Sulfide Nanocrystals

Antimony sulfide nanocrystals of various shapes and different phases are synthesized using a colloidal hot-injection method, and the as-prepared nanocrystals are used as a light harvesting material in photovoltaic devices.

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