scholarly journals Effect of guanidinium chloride in eliminating O2− electron extraction barrier on a SnO2 surface to enhance the efficiency of perovskite solar cells

RSC Advances ◽  
2020 ◽  
Vol 10 (33) ◽  
pp. 19513-19520 ◽  
Author(s):  
Miao Yu ◽  
Lijia Chen ◽  
Guannan Li ◽  
Cunyun Xu ◽  
Chuanyao Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Power Conversion Efficiency ◽  
Fill Factor ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Oxygen Species ◽  
Guanidinium Chloride ◽  
Adsorbed Oxygen Species ◽  
Electron Extraction

The charge transfer hindrance of adsorbed oxygen species on SnO2 is successfully reduced by modifying it with guanidinium chloride, improving the power conversion efficiency from 15.33% to 18.46% (after modification) with maximum fill factor of 80%.

scholarly journals Alkali Chloride Doped SnO2 Electron-Transporting Layer for Boosting Charge Transfer and Passivating Defects in All-Inorganic CsPbBr3 Perovskite Solar Cells

2021 ◽  
Author(s):  
Guixiang Xie ◽  
Xiaochun Lu ◽  
Jialong Duan ◽  
Yan Dong ◽  
Xiurong Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Alkali Chloride ◽  
Electron Transporting Layer ◽  
Charge Extraction

The electron-transporting layer (ETL) with improved charge extraction-transfer kinetics and the perovskite film with improved quality highly determine the power conversion efficiency (PCE) of perovskite solar cells (PSCs). Herein, various...

scholarly journals Heterojunction Incorporating Perovskite and Microporous Metal–Organic Framework Nanocrystals for Efficient and Stable Solar Cells

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Xuesong Zhou ◽  
Lele Qiu ◽  
Ruiqing Fan ◽  
Jian Zhang ◽  
Sue Hao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Relative Humidity ◽  
Grain Boundaries ◽  
Power Conversion Efficiency ◽  
Fill Factor ◽  
Metal Organic Framework ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Metal Organic ◽  
Organic Framework

AbstractIn this paper, we present a facile approach to enhance the efficiency and stability of perovskite solar cells (PSCs) by incorporating perovskite with microporous indium-based metal–organic framework [In12O(OH)16(H2O)5(btc)6]n (In-BTC) nanocrystals and forming heterojunction light-harvesting layer. The interconnected micropores and terminal oxygen sites of In-BTC allow the preferential crystallization of perovskite inside the regular cavities, endowing the derived films with improved morphology/crystallinity and reduced grain boundaries/defects. Consequently, the In-BTC-modified PSC yields enhanced fill factor of 0.79 and power conversion efficiency (PCE) of 20.87%, surpassing the pristine device (0.76 and 19.52%, respectively). More importantly, over 80% of the original PCE is retained after 12 days of exposure to ambient environment (25 °C and relative humidity of ~ 65%) without encapsulation, while only about 35% is left to the pristine device.

scholarly journals 1T-rich 2D-WS2 as Interfacial Agent to Escalate Photo-induced Charge Transfer Dynamics in a Dopant-free Perovskite Solar Cells

2021 ◽  
Author(s):  
Naveen Harindu Hemasiri ◽  
Samrana Kazim ◽  
Shahzada Ahmad
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Power Conversion Efficiency ◽  
High Power ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
High Power Conversion Efficiency ◽  
Halide Perovskite ◽  
Induced Charge ◽  
Charge Transfer Dynamics

The rapid scientific surge in halide perovskite solar cells (PSCs) is owing to their solution processability and high power conversion efficiency, however, the deficiency in the photo-induced charge transfer dynamics...

Synthesis of a side-chain hole transporting polymer through Mitsunobu post-functionalization for efficient inverted perovskite solar cells

2020 ◽  
Vol 11 (16) ◽  
pp. 2883-2888 ◽  
Author(s):  
Liuyuan Lan ◽  
Xiang Deng ◽  
Jie Zhang ◽  
Jingdong Luo ◽  
Alex K.-Y. Jen
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Fill Factor ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Side Chain ◽  
Hole Transporting ◽  
High Fill Factor ◽  
Post Functionalization

Mitsunobu post-functionalization was utilized to construct a new efficient dopant-free side-chain hole transporting polymer for inverted perovskite solar cells, exhibiting a power conversion efficiency of 17.75% and a high fill factor over 81%.

An Investigation of the Fill Factor and Efficiency of Molecular Semiconductor Solar Cells

2021 ◽  
Vol 1039 ◽  
pp. 373-381
Author(s):  
Taif Saad Al Maadhde ◽  
Mohammad Hafizuddin Jumali ◽  
Hadi J.M. Al-Agealy ◽  
Fatimah Binti Abdul Razak ◽  
Chi Chin Yap
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Fill Factor ◽  
Transition Energy ◽  
Power Conversion ◽  
Cell Systems ◽  
Transition Energies

This study investigated and calculated the fill factor and efficiency of N719 and D149 organic dyes in titanium dioxide (TiO2) solar cell systems using a current equation that we derived using a quantum transition-state theory (TST). The theory of charge transfer reactions was used to investigate the electronic current to enhance both the fill factor and efficiency of both N719/ and D149/TiO2 solar cell systems. The current calculated for Di-terabtylammoniumcis-bis (isthiocyanato) bis (2,2-bipyridyl-4,4dicarboxylato) ruthenicyanatoum (II)(N719) and 5-[[4-[4-(2,2-Diphenylethenyl) phenyl]-1,2,3-3a,4,8b-hexahydrocyclopent [b] indol-7-yl] methylene]-2-(3-ethyl-4-oxo-2-thioxo-5-thiazolidinylidene)-4-oxo-3-thiazolidineacetic acid indicated that the molecules of D149, an indoline-based dye, have to be in contact with the semiconductor due to the quantum donor-acceptor scenario model. The efficiency of N719/and D149/TiO2 solar cells were significantly affected due to transition energy, which is caused by the mechanisms of the charge transfer process. Solvents; such as trifluoroethanol (C2H3F3O), propanol (C3H8O), ethanol (C2H5OH), and acetonitrile (C2H3N); were used to determine the current, fill factor, and efficiency. Coefficients of charge transfer; such as transition energy, barrier, driving force energy, current, power-conversion efficiency, fill factor (FF), and efficiency; were evaluated theoretically. The current of the N719/ system with acetonitrile and ethanol solvents was higher than current of the N719/ system with trifluoroethanol and propanol solvents. While the current of the D149/ system with trifluoroethanol and propanol solvents was higher than current of the D149/ system with acetonitrile and ethanol solvents. The current and transition energy efficiencies of both systems varied. devices were found to have the best power conversion efficiency and low transition energies while the power conversion efficiency was large for devices with sizeable current density and activity with lower transition energies. Keywords: Fill Factor, Efficiency, Molecule/Semiconductor, Solar Cells.

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