Synthesis and Photovoltaic Properties of Boron β‐Ketoiminate Dyes Forming a Linear Donor‐π‐Acceptor Structure

2020 ◽  
Vol 15 (13) ◽  
pp. 1982-1989
Author(s):  
Yuki Sakura ◽  
Fumina Yumioka ◽  
Takashi Funaki ◽  
Katsuhiko Ono
Keyword(s):  
Photovoltaic Properties

Photovoltaic Properties of CdTe Nanoparticles-Decorated Titania Nanotubes Arrays

2008 ◽  
Author(s):  
Latika Menon ◽  
Eugen Panaitescu ◽  
Dattatri Nagesha ◽  
Trifon Fitchorov ◽  
John S. Morris ◽  
...  
Keyword(s):  
Titania Nanotubes ◽  
Photovoltaic Properties ◽  
Cdte Nanoparticles

Preparation of La-doped BiFeO3 Thin Film and Its Photovoltaic Properties

2013 ◽  
Vol 28 (4) ◽  
pp. 436-440 ◽  
Author(s):  
Yi-Jun XIE ◽  
Yi-Ping GUO ◽  
Wen DONG ◽  
Bing GUO ◽  
Hua LI ◽  
...  
Keyword(s):  
Thin Film ◽  
Bifeo3 Thin Film ◽  
Photovoltaic Properties ◽  
La Doped

scholarly journals Effects of Crystal Morphology on the Hot-Carrier Dynamics in Mixed-Cation Hybrid Lead Halide Perovskites

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 708
Author(s):  
Daniele Catone ◽  
Giuseppe Ammirati ◽  
Patrick O’Keeffe ◽  
Faustino Martelli ◽  
Lorenzo Di Mario ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Carrier Dynamics ◽  
Large Area ◽  
Photovoltaic Properties ◽  
Time Resolved ◽  
Hot Carrier ◽  
Mixed Cation ◽  
Small Crystals ◽  
Characterization Of Materials ◽  
Lead Halide

Ultrafast pump-probe spectroscopies have proved to be an important tool for the investigation of charge carriers dynamics in perovskite materials providing crucial information on the dynamics of the excited carriers, and fundamental in the development of new devices with tailored photovoltaic properties. Fast transient absorbance spectroscopy on mixed-cation hybrid lead halide perovskite samples was used to investigate how the dimensions and the morphology of the perovskite crystals embedded in the capping (large crystals) and mesoporous (small crystals) layers affect the hot-carrier dynamics in the first hundreds of femtoseconds as a function of the excitation energy. The comparative study between samples with perovskite deposited on substrates with and without the mesoporous layer has shown how the small crystals preserve the temperature of the carriers for a longer period after the excitation than the large crystals. This study showed how the high sensitivity of the time-resolved spectroscopies in discriminating the transient response due to the different morphology of the crystals embedded in the layers of the same sample can be applied in the general characterization of materials to be used in solar cell devices and large area modules, providing further and valuable information for the optimization and enhancement of stability and efficiency in the power conversion of new perovskite-based devices.

Impact of Synthetic Route on Photovoltaic Properties of Isoindigo‐Containing Conjugated Polymers

2021 ◽  
pp. 2100136
Author(s):  
Marina M. Tepliakova ◽  
Ilya E. Kuznetsov ◽  
Irina A. Avilova ◽  
Keith J. Stevenson ◽  
Alexander V. Akkuratov
Keyword(s):  
Conjugated Polymers ◽  
Synthetic Route ◽  
Photovoltaic Properties

scholarly journals Tuning Bandgaps of Mixed Halide and Oxide Perovskites CsSnX3 (X=Cl, I), and SrBO3 (B=Rh, Ti)

2021 ◽  
Vol 11 (15) ◽  
pp. 6862
Author(s):  
Hongzhe Wen ◽  
Xuan Luo
Keyword(s):  
Solar Energy ◽  
Electronic Properties ◽  
Density Functional ◽  
Photovoltaic Cell ◽  
Photovoltaic Properties ◽  
Functional Theory ◽  
New Approach ◽  
Energy Applications ◽  
Valence Bands ◽  
The Ideal

Perovskites have recently attracted interest in the field of solar energy due to their excellent photovoltaic properties. We herein present a new approach to the composition of lead free perovskites via mixing of halide and oxide perovskites that share the cubic ABX3 structure. Using first-principles calculations through Density Functional Theory, we systematically investigated the atomic and electronic structures of mixed perovskite compounds composed of four cubic ABX3 perovskites. Our result shows that the B and X atoms play important roles in their band structure. On the other hand, their valence bands contributed by O-2p, Rh-4p, and Ti-3p orbitals, and their electronic properties were determined by Rh-O and Ti-O bonds. With new understandings of the electronic properties of cubic halide or oxide perovskites, we lastly combined the cubic perovskites in various configurations to improve stability and tune the bandgap to values desirable for photovoltaic cell applications. Our investigations suggest that the mixed perovskite compound Cs2Sn2Cl3I3Sr2TiRhO6 produced a bandgap of 1.2 eV, which falls into the ideal range of 1.0 to 1.7 eV, indicating high photo-conversion efficiency and showing promise towards solar energy applications.

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