scholarly journals Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

Coatings ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 256 ◽  
Author(s):  
Guangxing Liang ◽  
Huabin Lan ◽  
Ping Fan ◽  
Chunfeng Lan ◽  
Zhuanghao Zheng ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cell ◽  
Thermal Evaporation ◽  
Perovskite Solar Cell ◽  
Stoichiometric Ratio ◽  
Single Source ◽  
Large Area ◽  
Highly Uniform ◽  
The Ideal

In this work, we report the reproducible preparation method of highly uniform large-area perovskite CH3NH3PbI3 thin films by scalable single-source thermal evaporation with the area of 100 cm2. The microstructural and optical properties of large-area CH3NH3PbI3 thin films were investigated. The dense, uniform, smooth, high crystallinity of large-area perovskite thin film was obtained. The element ratio of Pb/I was close to the ideal stoichiometric ratio of CH3NH3PbI3 thin film. These films show a favorable bandgap of 1.58 eV, long and balanced carrier-diffusion lengths. The CH3NH3PbI3 thin film perovskite solar cell shows a stable efficiency of 7.73% with almost no hysteresis, indicating a single-source thermal evaporation that is suitable for a large area perovskite solar cell.

scholarly journals Inorganic and Lead-free CsBi3I10 Thin Film Solar cell Prepared by Single-source Thermal Evaporation

2021 ◽  
Author(s):  
Huabin Lan ◽  
Xingye Chen ◽  
Ping Fan ◽  
Guangxing Liang
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Band Gap ◽  
Thermal Evaporation ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Single Source ◽  
Thermal Evaporation Method ◽  
Inorganic Lead

Abstract All inorganic lead-free halide perovskites have attracted much attention due to their non-toxic and good band gap. In this paper, we first prepared all inorganic lead-free perovskite CsBi3I10 thin films by single source thermal evaporation deposition. The results show that CsBi3I10 thin films prepared by single source thermal evaporation have layered structure, high purity hexagonal phase and high crystallinity, which are consistent with the theoretical calculation results. The surface of the thin film was compact and uniform, and had high homology with the crystal structure of the evaporation source material. After annealing, the crystallinity of the film was further improved. The band gap of the CsBi3I10 thin film calculated was 1.83 eV, Perovskite solar cells based on CsBi3I10 thin films exhibit an efficiency of up to 0.84%. These results indicate that the proposed single source thermal evaporation method has the potential to prepare high efficiency inorganic lead-free perovskite solar cells.

scholarly journals Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br0.5Cl0.5)3 Perovskite Films

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2953
Author(s):  
Saif M. H. Qaid ◽  
Hamid M. Ghaithan ◽  
Bandar Ali Al-Asbahi ◽  
Abdullah S. Aldwayyan
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Layer Thickness ◽  
Spontaneous Emission ◽  
Surface Passivation ◽  
Thermal Evaporation ◽  
Amplified Spontaneous Emission ◽  
Passivation Layer ◽  
Single Source ◽  
High Quality

High-quality inorganic cesium lead halide perovskite CsPb(Br0.5Cl0.5)3 thin films were successfully achieved through evaporation of the precursors and deposition sequentially by a single-source thermal evaporation system. The different melting points of the precursors were enabled us to evaporate precursors one by one in one trip. The resulting films through its fabrication were smooth and pinhole-free. Furthermore, this technique enabled complete surface coverage by high-quality perovskite crystallization and more moisture stability oppositely of that produce by solution-processed. Then the perovskite films were encapsulated by evaporated a polymethyl methacrylate (PMMA) polymer as a specialized surface passivation approach with various thicknesses. The blue emission, high photoluminescence quantum yield (PLQY), stable, and low threshold of amplified spontaneous emission (ASE) properties of CsPb(Br0.5Cl0.5)3 films in the bulk structure at room temperature were achieved. The effects of the surface-passivation layer and its thickness on the optical response were examined. Detailed analysis of the dependence of ASE properties on the surface passivation layer thickness was performed, and it was determined this achieves performance optimization. The ASE characteristics of bare perovskite thin film were influenced by the incorporation of the PMMA with various thicknesses. The improvement to the surface layer of perovskite thin films compared to that of the bare perovskite thin film was attributed to the combination of thermal evaporation deposition and surface encapsulation. The best results were achieved when using a low PMMA thickness up to 100 nm and reducing the ASE threshold by ~11 μJ/cm2 when compared with free-encapsulation and by ~13 μJ/cm2 when encapsulation occurs at 200 nm or thicker. Compared to the bare CsPb(Br0.5Cl0.5)3, ASE reduced 1.1 times when the PMMA thickness was 100 nm.

Sb2S3/SnSe thin film solar cells by thermal evaporation

2014 ◽  
Vol 1670 ◽  
Author(s):  
José Escorcia-García ◽  
Enue Barrios-Salgado ◽  
M.T.S. Nair ◽  
P.K. Nair
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cell ◽  
Thermal Evaporation ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Glass Substrates ◽  
Cell Structures

ABSTRACTWe report a stable CdS/Sb2S3/SnSe heterojunction thin film solar cell deposited on SnO2:F (FTO) – coated glass substrates. Thermal evaporation at 10-5 Torr with substrate temperature of 400 °C was used to deposit Sb2S3 and SnSe thin films of 450 nm and 160 nm, respectively. Thin film Sb2S3 has an optical band gap (Eg) of 1.48 eV and photoconductivity (σp) of 4x10-7 Ω-1 cm-1 and thin film SnSe has an Eg of 1.28 eV and σp of 2 Ω-1 cm-1. The chemically deposited CdS thin film heated at 400 °C shows an Eg of 2.34 eV and σp of 0.1 Ω-1 cm-1. Stabilized solar cell structures with these thin films, FTO/CdS/Sb2S3/SnSe/C-Ag, showed open circuit voltage (Voc) of 0.60 V, short circuit current density (Jsc) of 5.51 mA/cm2 and power conversion efficiency (η) of 0.96% with a fill factor FF of 0.29. In the absence of the SnSe layer, Jsc decreases to 4.77 mA/cm2.

scholarly journals Single Source Thermal Evaporation of Two-dimensional Perovskite Thin Films for Photovoltaic Applications

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zhuang-Hao Zheng ◽  
Hua-Bin Lan ◽  
Zheng-Hua Su ◽  
Huan-Xin Peng ◽  
Jing-Ting Luo ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Solar Cell ◽  
High Performance ◽  
Thermal Evaporation ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
Single Source ◽  
Solvent Annealing ◽  
Solvent Vapor

AbstractHybrid two-dimensional (2D) halide perovskites has been widely studied due to its potential application for high performance perovskite solar cells. Understanding the relationship between microstructural and opto-electronic properties is very important for fabricating high-performance 2D perovskite solar cell. In this work, the effect of solvent annealing on grain growth was investigated to enhance the efficiency of photovoltaic devices with 2D perovskite films based on (BA)2(MA)3Pb4I13 prepared by single-source thermal evaporation. Results show that solvent annealing with the introduction of solvent vapor can effectively enhance the crystallization of the (BA)2(MA)3Pb4I13 thin films and produce denser, larger-crystal grains. The thin films also display a favorable band gap of 1.896 eV, which benefits for increasing the charge-diffusion lengths. The solvent-annealed (BA)2(MA)3Pb4I13 thin-film solar cell prepared by single-source thermal evaporation shows an efficiency range of 2.54–4.67%. Thus, the proposed method can be used to prepare efficient large-area 2D perovskite solar cells.

scholarly journals Thermally evaporated methylammonium tin triiodide thin films for lead-free perovskite solar cell fabrication

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90248-90254 ◽  
Author(s):  
Yue Yu ◽  
Dewei Zhao ◽  
Corey R. Grice ◽  
Weiwei Meng ◽  
Changlei Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Solar Cell ◽  
Thermal Evaporation ◽  
Perovskite Solar Cell ◽  
Lead Free ◽  
Thermal Evaporation Method ◽  
Evaporation Method ◽  
Solar Cell Fabrication ◽  
Cell Fabrication

A hybrid thermal evaporation method was explored in the synthesis of lead-free perovskite thin films and fabrication of solar cells.

scholarly journals From radical to triradical thin film processes: the Blatter radical derivatives

2021 ◽  
Author(s):  
Arrigo Calzolari ◽  
Andrzej Rajca ◽  
Maria Benedetta Casu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Thermal Evaporation ◽  
Controlled Environment

We demonstrate the possibility to evaporate Blatter radical derivatives in a controlled environment obtaining thin films that preserve the (poly)radical magnetic character. However, their thermal evaporation is challenging. We analyse...

CuxSbySz THIN FILMS PRODUCED BY ANNEALING CHEMICALLY DEPOSITED Sb2S3-CuS THIN FILMS

2001 ◽  
Vol 15 (17n19) ◽  
pp. 667-670 ◽  
Author(s):  
Y. RODRÍGUEZ-LAZCANO ◽  
M. T. S. NAIR ◽  
P. K. NAIR
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Band Gap ◽  
Deposition Method ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Electrical And Optical Properties ◽  
Ternary Compounds ◽  
Glass Substrates ◽  
Different Temperatures

The possibility of generating ternary compounds through annealing thin film stacks of binary composition has been demonstrated before. In this work we report a method to produce large area coating of ternary compounds through a reaction in solid state between thin films of Sb2S3 and CuS. Thin films of Sb2S3 -CuS were deposited on glass substrates in the sequence of Sb2S3 followed by CuS (on Sb2S3 ) using chemical bath deposition method. The multilayer stack, thus produced, of approximately 0.5 μm in thickness, where annealed under nitrogen and argon atmospheres at different temperatures to produce films of ternary composition, CuxSbySz . An optical band gap of ~1.5 eV was observed in these films, suggesting that the thin films of ternary composition formed in this way are suitable for use as absorber materials in photovoltaic devices. The results on the analyses of structural, electrical and optical properties of films formed with different combinations of thickness in the multilayers will be discussed in the paper.

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