scholarly journals Conversion of metal-organic halide perovskite from PbI2 precursor films grown by hot-wall method

2018 ◽  
Vol 192 ◽  
pp. 01031
Author(s):  
Satoru Seto ◽  
Rintaro Shimizu ◽  
Makoto Tokuda
Keyword(s):  
Solar Cells ◽  
Perovskite Phase ◽  
Perovskite Solar Cells ◽  
X Ray Diffraction ◽  
Organic Halide ◽  
Metal Organic ◽  
Halide Perovskite ◽  
Planar Heterojunction ◽  
Conversion Efficiencies ◽  
Wall Method

We report on metal-organic halide perovskite CH3NH3PbI3 films converted from PbI2 precursors for planar heterojunction perovskite solar cells. PbI2 films as a precursor were deposited by hot-wall method and conventional vacuum evaporation. The conversion to perovskite phase from the PbI2 films were performed by annealing in methyl ammonium iodine (MAI) vapour at 120-150 °C. We confirmed that no residual PbI2 phase can be detected in the converted perovskite films by x-ray diffraction measurements. The surface morphology of the perovskite films was measured by AFM. Roughness Ra of the films is 17.8 nm, which is comparable value to the reported ones. Using the converted perovskite films we fabricated tentative perovskite solar cells with a device architecture of ITO/PEDOT:PSS/Perovskite/C60/Ag. The power conversion efficiencies of the fabricated solar cells from a conventional evaporation and the hot-wall method exhibited 2.22 and 2.33%, respectively.

Control by Mixed-Chloride Additives of the Quality and Homogeneity of Bulk Halide Perovskite upon Film Formation Process

2021 ◽  
Author(s):  
Thierry Pauporté ◽  
Daming zheng
Keyword(s):  
Solar Cells ◽  
Formation Process ◽  
High Efficiency ◽  
Film Formation ◽  
Perovskite Solar Cells ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stability Issue ◽  
Halide Perovskite ◽  
The Stability

Nowadays, overcoming the stability issue of perovskite solar cells (PSCs) while keeping high efficiency has become an urgent need for the future of this technology. By using x-ray diffraction (XRD),...

scholarly journals Roll-to-roll gravure-printed flexible perovskite solar cells using eco-friendly antisolvent bathing with wide processing window

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Young Yun Kim ◽  
Tae-Youl Yang ◽  
Riikka Suhonen ◽  
Antti Kemppainen ◽  
Kyeongil Hwang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Phase ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Pilot Scale ◽  
Butyl Alcohol ◽  
Processing Window ◽  
Roll To Roll ◽  
Tert Butyl Alcohol ◽  
Conversion Efficiencies

Abstract Driven by recent improvements in efficiency and stability of perovskite solar cells (PSCs), upscaling of PSCs has come to be regarded as the next step. Specifically, a high-throughput, low-cost roll-to-roll (R2R) processes would be a breakthrough to realize the commercialization of PSCs, with uniform formation of precursor wet film and complete conversion to perovskite phase via R2R-compatible processes necessary to accomplish this goal. Herein, we demonstrate the pilot-scale, fully R2R manufacturing of all the layers except for electrodes in PSCs. Tert-butyl alcohol (tBuOH) is introduced as an eco-friendly antisolvent with a wide processing window. Highly crystalline, uniform formamidinium (FA)-based perovskite formation via tBuOH:EA bathing was confirmed by achieving high power conversion efficiencies (PCEs) of 23.5% for glass-based spin-coated PSCs, and 19.1% for gravure-printed flexible PSCs. As an extended work, R2R gravure-printing and tBuOH:EA bathing resulted in the highest PCE reported for R2R-processed PSCs, 16.7% for PSCs with R2R-processed SnO2/FA-perovskite, and 13.8% for fully R2R-produced PSCs.

Planar heterojunction organometal halide perovskite solar cells: roles of interfacial layers

2016 ◽  
Vol 9 (1) ◽  
pp. 12-30 ◽  
Author(s):  
Hobeom Kim ◽  
Kyung-Geun Lim ◽  
Tae-Woo Lee
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Review Article ◽  
Interfacial Layers ◽  
Highly Efficient ◽  
Practical Strategy ◽  
Organometal Halide Perovskite ◽  
Halide Perovskite ◽  
Planar Heterojunction

This review article gives an overview of progress in planar heterojunction perovskite solar cells and the roles of interfacial layers in the device, and suggests a practical strategy to fabricate highly efficient and flexible planar heterojunction perovskite solar cells.

scholarly journals Organo-metal halide perovskite-based solar cells with CuSCN as the inorganic hole selective contact

2014 ◽  
Vol 2 (32) ◽  
pp. 12754-12760 ◽  
Author(s):  
Sudam Chavhan ◽  
Oscar Miguel ◽  
Hans-Jurgen Grande ◽  
Victoria Gonzalez-Pedro ◽  
Rafael S. Sánchez ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Solution Processed ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Planar Heterojunction

The viability of using solution-processed CuSCN films as inorganic hole selective contacts in perovskite solar cells is demonstrated, by reaching a power conversion efficiency of 6.4% in planar heterojunction-based devices.

scholarly journals Improving Two-Step Prepared CH3NH3PbI3 Perovskite Solar Cells by Co-Doping Potassium Halide and Water in PbI2 Layer

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 666 ◽  
Author(s):  
Hsuan-Ta Wu ◽  
Yu-Ting Cheng ◽  
Ching-Chich Leu ◽  
Shih-Hsiung Wu ◽  
Chuan-Feng Shih
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Defect Density ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Organic Halide ◽  
Co Doping ◽  
Halide Perovskite ◽  
Potassium Halides

Incorporating additives into organic halide perovskite solar cells is the typical approach to improve power conversion efficiency. In this paper, a methyl-ammonium lead iodide (CH3NH3PbI3, MAPbI3) organic perovskite film was fabricated using a two-step sequential process on top of the poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) hole-transporting layer. Experimentally, water and potassium halides (KCl, KBr, and KI) were incorporated into the PbI2 precursor solution. With only 2 vol% water, the cell efficiency was effectively improved. Without water, the addition of all of the three potassium halides unanimously degraded the performance of the solar cells, although the crystallinity was improved. Co-doping with KI and water showed a pronounced improvement in crystallinity and the elimination of carrier traps, yielding a power conversion efficiency (PCE) of 13.9%, which was approximately 60% higher than the pristine reference cell. The effect of metal halide and water co-doping in the PbI2 layer on the performance of organic perovskite solar cells was studied. Raman and Fourier transform infrared spectroscopies indicated that a PbI2-dimethylformamide-water related adduct was formed upon co-doping. Photoluminescence enhancement was observed due to the co-doping of KI and water, indicating the defect density was reduced. Finally, the co-doping process was recommended for developing high-performance organic halide perovskite solar cells.

Efficient planar-heterojunction perovskite solar cells achieved via interfacial modification of a sol–gel ZnO electron collection layer

2014 ◽  
Vol 2 (41) ◽  
pp. 17291-17296 ◽  
Author(s):  
Junghwan Kim ◽  
Geunjin Kim ◽  
Tae Kyun Kim ◽  
Sooncheol Kwon ◽  
Hyungcheol Back ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Interfacial Engineering ◽  
Electron Collection ◽  
Interfacial Modification ◽  
New Strategy ◽  
Planar Heterojunction ◽  
Conversion Efficiencies

The importance of interfacial engineering as a new strategy for improving the power conversion efficiencies (PCEs) of planar-heterojunction (PHJ) perovskite solar cells is highlighted by incorporating sol–gel ZnO modified with PCBM.

Planar Heterojunction Perovskite Solar Cells Incorporating Metal-Organic Framework Nanocrystals

2015 ◽  
Vol 27 (44) ◽  
pp. 7229-7235 ◽  
Author(s):  
Ting-Hsiang Chang ◽  
Chung-Wei Kung ◽  
Hsin-Wei Chen ◽  
Tzu-Yen Huang ◽  
Sheng-Yuan Kao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Organic Framework ◽  
Perovskite Solar Cells ◽  
Metal Organic ◽  
Planar Heterojunction ◽  
Organic Framework

Efficient planar heterojunction mixed-halide perovskite solar cells deposited via spray-deposition

2014 ◽  
Vol 7 (9) ◽  
pp. 2944-2950 ◽  
Author(s):  
Alexander T. Barrows ◽  
Andrew J. Pearson ◽  
Chan Kyu Kwak ◽  
Alan D. F. Dunbar ◽  
Alastair R. Buckley ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Spray Deposition ◽  
Perovskite Solar Cells ◽  
Processing Methods ◽  
Promising Technology ◽  
Roll To Roll ◽  
Halide Perovskite ◽  
Planar Heterojunction

Perovskite solar cells prepared via spray-deposition of the active layer have been realized, advancing this promising technology towards roll-to-roll compatible processing methods.

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