scholarly journals Effect of Ammonium Halide Additives on the Performance of Methyl Amine Based Perovskite Solar Cells

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1417 ◽  
Author(s):  
Do Heo ◽  
Zhengtang Luo ◽  
Soo Kim
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Methyl Amine ◽  
Scanning Electron

CH3NH3PbI3-xClx species were fabricated as light-absorbing layers for perovskite solar cells (PSCs), by employing NH4I, NH4Br, and NH4Cl as additives via annealing at 100 °C for different times. Solutions containing CH3NH3I, PbI2, and PbCl2 (4:1:1 molar ratio) in N,N-dimethylformamide were used to prepare perovskites with NH4I, NH4Br, and NH4Cl as additives, at concentrations of 0.1 M and 0.3 M. The additives helped increase the grain size and reduce pinholes in the perovskite films, as confirmed by field-emission scanning electron microscopy. The X-ray diffraction profiles of CH3NH3PbI3-xClx clearly showed peaks at 14° and 28° for the samples with additives, indicative of crystallinity. The best PSC performance with a power conversion efficiency of 9.13%, was achieved using 0.1 M NH4I by annealing for 5 min, whereas the power conversion efficiency of the perovskite solar cells without additives was 5.40%.

scholarly journals Efficient luminescent solar cells based on tailored mixed-cation perovskites

2016 ◽  
Vol 2 (1) ◽  
pp. e1501170 ◽  
Author(s):  
Dongqin Bi ◽  
Wolfgang Tress ◽  
M. Ibrahim Dar ◽  
Peng Gao ◽  
Jingshan Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Weight Percent ◽  
Open Circuit ◽  
Single Step ◽  
Molar Ratio

We report on a new metal halide perovskite photovoltaic cell that exhibits both very high solar-to-electric power-conversion efficiency and intense electroluminescence. We produce the perovskite films in a single step from a solution containing a mixture of FAI, PbI2, MABr, and PbBr2(where FA stands for formamidinium cations and MA stands for methylammonium cations). Using mesoporous TiO2and Spiro-OMeTAD as electron- and hole-specific contacts, respectively, we fabricate perovskite solar cells that achieve a maximum power-conversion efficiency of 20.8% for a PbI2/FAI molar ratio of 1.05 in the precursor solution. Rietveld analysis of x-ray diffraction data reveals that the excess PbI2content incorporated into such a film is about 3 weight percent. Time-resolved photoluminescence decay measurements show that the small excess of PbI2suppresses nonradiative charge carrier recombination. This in turn augments the external electroluminescence quantum efficiency to values of about 0.5%, a record for perovskite photovoltaics approaching that of the best silicon solar cells. Correspondingly, the open-circuit photovoltage reaches 1.18 V under AM 1.5 sunlight.

PHOTOELECTRODE WITH LIGHT AND HEAT SYNERGY UTILIZATION BASED ON CdTe/Bi2Te3 NANOROD ARRAYS/NANOLAYER FILM

2013 ◽  
Vol 06 (05) ◽  
pp. 1340004 ◽  
Author(s):  
YUAN DENG ◽  
BINGWEI LUO ◽  
YAO WANG ◽  
LILI CAO ◽  
YONGMING SHI ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Nanorod Arrays ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Dimension ◽  
Photoelectrochemical Solar Cells ◽  
Scanning Electron

Photoelectrode of CdTe / Bi 2 Te 3 nanorod arrays/nanolayer film is designed for light and heat synergy utilization, which is carried out by two-step synthesis route of magnetron sputtering. The composition and microstructure of CdTe / Bi 2 Te 3 nanorod arrays/nanolayer are determined by powder X-ray diffraction and scanning electron microscopy. Under AM 1.5 G illumination, the power conversion efficiency of CdTe / Bi 2 Te 3 nanorod arrays/nanolayer photoelectrode is 10 times larger than that of CdTe nanorod arrays. It was found that the power conversion efficiency is mainly affected by the thickness of the Bi 2 Te 3 film. These results significantly improve the performance of low-dimension CdTe photoelectrochemical solar cells and also open new possibilities for solar light and heat synergy utilization.

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

scholarly journals Two-dimensional or passivation treatment: the effect of Hexylammonium post deposition treatment on 3D halide perovskite-based solar cells

2021 ◽  
Author(s):  
Stav Rahmany ◽  
Lioz Etgar
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Theoretical Limit ◽  
Halide Perovskite ◽  
Passivation Treatment ◽  
Post Deposition

Much effort has been made to push the power conversion efficiency of perovskite solar cells (PSCs) towards the theoretical limit. Recent studies have shown that post deposition treatment of barrier...

scholarly journals SnO2–Ti3C2 MXene electron transport layers for perovskite solar cells

2019 ◽  
Vol 7 (10) ◽  
pp. 5635-5642 ◽  
Author(s):  
Lin Yang ◽  
Yohan Dall'Agnese ◽  
Kanit Hantanasirisakul ◽  
Christopher E. Shuck ◽  
Kathleen Maleski ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
P Addition

Addition of the Ti3C2 into SnO2 enhanced the power conversion efficiency due to the good conductivity of Ti3C2 nanosheets.

Strategies of modifying spiro-OMeTAD materials for perovskite solar cells: A review

2021 ◽  
Author(s):  
Wenbin Guo ◽  
Guanhua Ren ◽  
Wenbin Han ◽  
Yanyu Deng ◽  
Wei Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
The Past ◽  
Hybrid Perovskite

Organic-inorganic hybrid perovskite solar cells (PSCs) have made unprecedented progress in the past ten years, the power conversion efficiency of which increased from 3.8% in 2009 to 25.5% in 2019....

scholarly journals Room Temperature Processed Double Electron Transport Layers for Efficient Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 329
Author(s):  
Wen Huang ◽  
Rui Zhang ◽  
Xuwen Xia ◽  
Parker Steichen ◽  
Nanjing Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Room Temperature ◽  
Deposition Time ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Electron Transport Layer ◽  
Double Electron

Zinc Oxide (ZnO) has been regarded as a promising electron transport layer (ETL) in perovskite solar cells (PSCs) owing to its high electron mobility. However, the acid-nonresistance of ZnO could destroy organic-inorganic hybrid halide perovskite such as methylammonium lead triiodide (MAPbI3) in PSCs, resulting in poor power conversion efficiency (PCE). It is demonstrated in this work that Nb2O5/ZnO films were deposited at room temperature with RF magnetron sputtering and were successfully used as double electron transport layers (DETL) in PSCs due to the energy band matching between Nb2O5 and MAPbI3 as well as ZnO. In addition, the insertion of Nb2O5 between ZnO and MAPbI3 facilitated the stability of the perovskite film. A systematic investigation of the ZnO deposition time on the PCE has been carried out. A deposition time of five minutes achieved a ZnO layer in the PSCs with the highest power conversion efficiency of up to 13.8%. This excellent photovoltaic property was caused by the excellent light absorption property of the high-quality perovskite film and a fast electron extraction at the perovskite/DETL interface.

Amidation Induced Self-Reduction of p-GO with Lewis-Base Termination for All-Inorganic CsPbIBr2 Perovskite Solar Cells

2021 ◽  
Author(s):  
Jian Du ◽  
Jialong Duan ◽  
Qiyao Guo ◽  
Yanyan Duan ◽  
Xiya Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Lewis Base ◽  
Interfacial Energetics

Simultaneously tailoring the interfacial energetics and healing the defective nanostructure of perovskite film is of great important to promote the power conversion efficiency of perovskite solar cells (PSCs). Herein, a...

Incident-angle-controlled semitransparent colored perovskite solar cells with improved efficiency exploiting a multilayer dielectric mirror

Nanoscale ◽  
2017 ◽  
Vol 9 (37) ◽  
pp. 13983-13989 ◽  
Author(s):  
Kyu-Tae Lee ◽  
Ji-Yun Jang ◽  
Sang Jin Park ◽  
Song Ah Ok ◽  
Hui Joon Park
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Incident Angle ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Dielectric Mirror ◽  
Wide Range ◽  
Multilayer Dielectric

See-through colored perovskite solar cells that exploit a dielectric mirror are demonstrated. The dielectric mirror strongly reflects a wide range of visible light back to a photoactive layer for efficient light-harvesting, yielding 10.12% power conversion efficiency, with iridescent semitransparent colors.

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