Insights about the Absence of Rb Cation from the 3D Perovskite Lattice: Effect on the Structural, Morphological, and Photophysical Properties and Photovoltaic Performance

Small ◽  
2018 ◽  
Vol 14 (36) ◽  
pp. 1802033 ◽  
Author(s):  
Ryusuke Uchida ◽  
Silvia Binet ◽  
Neha Arora ◽  
Gwenole Jacopin ◽  
Mohammad Hayal Alotaibi ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Lattice Effect ◽  
Perovskite Lattice

Cyclometalated Platinum Polymers: Synthesis, Photophysical Properties, and Photovoltaic Performance

2010 ◽  
Vol 22 (6) ◽  
pp. 1977-1987 ◽  
Author(s):  
Tabitha A. Clem ◽  
David F. J. Kavulak ◽  
Erik J. Westling ◽  
Jean M. J. Fréchet
Keyword(s):  
Photophysical Properties ◽  
Photovoltaic Performance

scholarly journals Investigation on Film Quality and Photophysical Properties of Narrow Bandgap Molecular Semiconductor Thin Film and Its Solar Cell Application

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1300
Author(s):  
Xiaotong Li ◽  
Xiaoping Zou ◽  
Chunqian Zhang ◽  
Jin Cheng ◽  
Guangdong Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Dilution Ratio ◽  
Solar Cell Application ◽  
Type Semiconductor ◽  
Molecular Semiconductor

Hexane-1,6-diammonium pentaiodobismuth (HDA-BiI5) is one of the narrowest bandgap molecular semiconductor reported in recent years. Through the study of its energy band structure, it can be identified as an N-type semiconductor and is able to absorb most of the visible light, making it suitable to fabricate solar cells. In this paper, SnO2 was used as an electron transport layer in HDA-BiI5-based solar cells, for its higher carrier mobility compared with TiO2, which is the electron transport layer used in previous researches. In addition, the dilution ratio of SnO2 solution has an effect on both the morphology and photophysical properties of HDA-BiI5 films. At the dilution ratio of SnO2:H2O = 3:8, the HDA-BiI5 film has a better morphology and is less defect inside, and the corresponding device exhibited the best photovoltaic performance.

The impact of heteroatom substitution on cross-conjugation and its effect on the photovoltaic performance of DSSCs – a computational investigation of linear vs. cross-conjugated anchoring units

2018 ◽  
Vol 20 (35) ◽  
pp. 22660-22673 ◽  
Author(s):  
Mahalingavelar Paramasivam ◽  
Ramesh Kumar Chitumalla ◽  
Joonkyung Jang ◽  
Ji Ho Youk
Keyword(s):  
Photophysical Properties ◽  
Energy Levels ◽  
Photovoltaic Performance ◽  
Computational Investigation ◽  
Conjugated Systems ◽  
Reverse Trend ◽  
Heteroatom Substitution ◽  
The Impact

The heteroatom substitution on cross conjugation takes a reverse trend to the linear π-conjugated systems by means of energy levels and photophysical properties. The resultant changes directly affecting the photovoltaic performance of DSSCs.

Band gap grading and photovoltaic performance of solution-processed Cu(In,Ga)S2 thin-film solar cells

2014 ◽  
Vol 16 (48) ◽  
pp. 27112-27118 ◽  
Author(s):  
So Hyeong Sohn ◽  
Noh Soo Han ◽  
Yong Jin Park ◽  
Seung Min Park ◽  
Hee Sang An ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Solar Cells ◽  
Band Gap ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Thin Film Solar Cells ◽  
Electrical Characteristics ◽  
Coating Methods

The photophysical properties of CIGS thin films, prepared by solution-based coating methods, are investigated to understand the correlation between the optical properties and the electrical characteristics of solar cells.

scholarly journals Photophysical Studies on D-π-A Imidazole Derivative for Organic Dye Sensitized Solar Cell Application

2020 ◽  
Vol 32 (11) ◽  
pp. 2829-2838
Author(s):  
Shashikant Walki ◽  
Hemantkumar M. Savanur ◽  
M.K. Ravindra ◽  
Soniya Naik ◽  
G.H. Malimath ◽  
...  
Keyword(s):  
Solar Cell ◽  
Tio2 Nanoparticles ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Imidazole Ring ◽  
Organic Dye ◽  
Dye Sensitized Solar Cell ◽  
Computational Techniques ◽  
Solar Cell Application ◽  
Dye Sensitized

In present study, a new organic dye 2-(4-chlorophenyl)-1-(4-methoxyphenyl)-4,5-diphenyl-1Himidazole (CMI) containing phenyl donor with imidazole ring as π-linker and chlorophenyl group as acceptor have been synthesized. The photophysical properties like solvato-chromism, optical band gap and fluorescence lifetime are estimated using experimental as well as quantum chemical computational techniques. Further, photosensitization of TiO2 nanoparticles from CMI dye has been investigated using absorption, steady-state and time resolved fluorescence methods. The increase in absorbance and a decrease in fluorescence spectra with different concentrations of TiO2 nanoparticles confirmed the possibility of interactions between dye and TiO2 nanoparticles. Rehm-Weller relation suggests that a decrease in fluorescence of CMI dye was due to photo-induced electron transfer process and the Stern-Volmer studies suggest that the fluorescence quenching mechanism was due to combined dynamic and static quenching process. Further, dye-sensitized solar cell using this newly synthesized CMI dye has been fabricated and characterized for their photovoltaic performance under illumination. Photovoltaic energy conversion efficiency and fill factor of the CMI dye were found to be 1.76% and 0.56, respectively.

Anthracene Based Conjugated Polymers: Correlation between π−π-Stacking Ability, Photophysical Properties, Charge Carrier Mobility, and Photovoltaic Performance

2010 ◽  
Vol 43 (3) ◽  
pp. 1261-1269 ◽  
Author(s):  
Daniel A. M. Egbe ◽  
Stefan Türk ◽  
Silke Rathgeber ◽  
Florian Kühnlenz ◽  
Rupali Jadhav ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Conjugated Polymers ◽  
Carrier Mobility ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Charge Carrier Mobility ◽  
Π Stacking

scholarly journals Two Novel, Simple-Structured and Easy-Synthesized Acceptors Based on Fluorene or Carbazole for Non-Fullerene Organic Solar Cells

2021 ◽  
Author(s):  
Fubiao Weng ◽  
Songping Shen ◽  
Peijin Zheng ◽  
Gengbiao Xu ◽  
Zhiwei Qiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Reduction Potential ◽  
Photophysical Properties ◽  
Photovoltaic Performance ◽  
Hole Mobility ◽  
Oxidation Potential ◽  
Initial Oxidation ◽  
Mobility Rate

Abstract Two novel D-π-A-π-D type non-fullerene acceptors (FPTC and CPTC) composed of fluorene or carbazole as acceptor unit, benzene as intermediates and 2-(6-oxo-5,6-dihydro-4H-cyclopenta[c] thiophen-4-ylidene) malononitrile (TC) as terminal groups are synthesized through only two procedures. Also, their electrochemical behavior, photophysical properties and photovoltaic performance are systematically characterized and thoroughly studied. In consequence, the FPTC has better performance than C PTC, and the PCE of this device based on FPTC: PTB7-Th is nearly 1% higher than that of CPTC: PTB7-Th device, reaching up to 1.09% with a V OC of 0.71 V, a J SC of 3.42 mA cm − 2 . The higher PCE of the device based on FPTC is attributed to the fact that this molecular has a wider absorption spectrum and a higher molar extinction coefficient nearly four times than that of CPTC, a higher initial oxidation potential, and a lower onset reduction potential. Also, the higher electron mobility rate and hole mobility rate contribute to the device based on FPTC better performances. Compared with carbazole, the fluorene as the acceptor unit provides potential possibilities for the construction of high-performance organic solar cells.

scholarly journals Significantly suppressing ion migration in metal halide perovskites via trace of multivalent interstitial doping

2021 ◽  
Author(s):  
Yepin Zhao ◽  
Ilhan Yavuz ◽  
Minhuan Wang ◽  
Marc Weber ◽  
Ju-Hong Lee ◽  
...  
Keyword(s):  
Lattice Strain ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Monovalent Cation ◽  
Interstitial Site ◽  
Ion Migration ◽  
Valence States ◽  
Halide Perovskites ◽  
Long Range Ordering ◽  
Perovskite Lattice

Abstract Cations with suitable sizes to occupy an interstitial site of perovskite crystals have been widely used to inhibit ion migration and promote performance and stability of perovskite optoelectronics. However, the interstitial doping accompanies inevitable lattice strain to impair long-range ordering and stability of the crystals to cause a sacrificial trade-off. Here, we unravel the evident influence of the valence states of the interstitial cations on their efficacy to suppress the ion migration. Incorporation of a trivalent neodymium cation (Nd3+) effectively mitigates the ion migration in the perovskite lattice with significantly reduced dosage (0.08%) compared to a widely used monovalent cation dopant (Na+, 0.45%). Less but better, the prototypical perovskite solar cells incorporated with Nd3+ exhibits significantly enhanced photovoltaic performance and operational stability.

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