Fabrication of lead-free CsBi3I10 based compact perovskite thin films by employing solvent engineering and anti-solvent treatment techniques: an efficient photo-conversion efficiency up to 740 nm

2020 ◽  
Vol 4 (10) ◽  
pp. 5042-5049
Author(s):  
Pandiyarajan Mariyappan ◽  
Towhid H. Chowdhury ◽  
Shanthi Subashchandran ◽  
Idriss Bedja ◽  
Hamid M. Ghaithan ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Solvent Treatment ◽  
Solvent Engineering ◽  
Treatment Techniques

Lead free CsBi3I10 based thin films has been developed for perovskite solar cells by introducing antisolvent method with photo conversion efficiency up to 740 nm.

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.

An investigation of physical properties and photovoltaic performance of methylammonium lead-tin iodide (CH3NH3Sn1-xPbxI3) solar cells

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Omid Malekan ◽  
Mehdi Adelifard ◽  
Mohamad Mehdi Bagheri Mohagheghi
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
X Ray Diffraction ◽  
Content Type ◽  
X Ray ◽  
High Absorption Coefficient ◽  
High Absorption

Purpose In the past several years, CH3NH3PbI3 perovskite material has been extensively evaluated as an absorber layer of perovskite solar cells due to its excellent structural and optical properties, and greater than 22% conversion efficiency. However, improvement and future commercialization of solar cells based on CH3NH3PbI3 encountered restrictions due to toxicity and instability of the lead element. Recently, studies on properties of lead-free and mixture of lead with other cations perovskite thin films as light absorber materials have been reported. The purpose of this paper was the fabrication of CH3NH3Sn1-xPbxI3 thin films with different SnI2 concentrations in ambient condition, and study on the structural, morphological, optical, and photovoltaic performance of the studied solar cells. The X-ray diffraction studies revealed the formation of both CH3NH3PbI3 and CH3NH3SnI3 phases with increasing the Sn concentration, and improvement in crystallinity and morphology was also observed. All perovskite layers had a relatively high absorption coefficient >104 cm−1 in the visible wavelengths, and the bandgap values varied in the range from 1.46 to 1.63 eV. Perovskite solar cells based on these thin films have been fabricated, and device performance was investigated. Results showed that photo-conversion efficiency (PCE) for the pure CH3NH3PbI3sample was 1.20%. With adding SnI2, PCE was increased to 4.48%. Design/methodology/approach In this work, the author mixed tin and lead with different percentages in the perovskite thin film. Also, the preparation of these layers and also other layers to fabricate solar cells based on them were conducted in an open and non-glove box environment. Finally, the effect of [Sn/Pb] ratio in the CH3NH3Sn1-xPbxI3 layers on the structural, morphological, optical, electrical and photovoltaic performance have been investigated. Findings CH3NH3Sn1-xPbxI3 (x = 0.0, 0.25, 0.50, 0.75, 1.0) perovskite thin films have been grown by a spin-coating technique. It was found that as tin concentration increases, the X-ray diffraction and FESEM images studies revealed the formation of both CH3NH3PbI3 and CH3NH3SnI3 phases, and improvement in crystallinity, and morphology; all thin films had high absorption coefficient values close to 104 cm−1 in the visible region, and the direct optical bandgap in the layers decreases from 1.63 eV in pure CH3NH3SnI3 to 1.46 eV for CH3NH3Sn0.0.25Pb0.75I3 samples; all thin films had p-type conductivity, and mobility and carrier density increased; perovskite solar cells based on these thin films have been fabricated, and device performance was investigated. Results showed that photo-conversion efficiency (PCE) for the pure CH3NH3PbI3sample was 1.20%. With adding SnI2, PCE was increased to 4.48%. Originality/value The preparation method seems to be interesting as it is in an ambient environment without the protection of nitrogen or argon gas.

scholarly journals Theoretical and experimental investigations on the bulk photovoltaic effect in lead-free perovskites MASnI3 and FASnI3

RSC Advances ◽  
2020 ◽  
Vol 10 (25) ◽  
pp. 14679-14688
Author(s):  
Liping Peng ◽  
Wei Xie
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Photovoltaic Effect ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Experimental Investigations ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion

Perovskite solar cells based on the lead free hybrid organic–inorganic CH3NH3SnI3 (MASnI3) and CH4N2SnI3 (FASnI3) perovskites were fabricated, and the photoelectric conversion efficiency (PCE) was assessed.

scholarly journals Triple-cation low-bandgap perovskite thin-films for high-efficiency four-terminal all-perovskite tandem solar cells

2020 ◽  
Vol 8 (46) ◽  
pp. 24608-24619 ◽  
Author(s):  
Somayeh Moghadamzadeh ◽  
Ihteaz M. Hossain ◽  
The Duong ◽  
Saba Gharibzadeh ◽  
Tobias Abzieher ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Tandem Solar Cells ◽  
Low Bandgap ◽  
Photo Stability

Incorporating 2.5% Cs in FA0.8MA0.2Sn0.5Pb0.5I3 improves the photo-stability of the low-bandgap perovskite solar cells. The champion device with power conversion efficiency of 18.9% maintain 92% of its initial efficiency after 120 min MPP tracking.

scholarly journals High‐Quality Sequential‐Vapor‐Deposited Cs 2 AgBiBr 6 Thin Films for Lead‐Free Perovskite Solar Cells (Solar RRL 12∕2018)

Solar RRL ◽  
2018 ◽  
Vol 2 (12) ◽  
pp. 1870238 ◽  
Author(s):  
Ming Wang ◽  
Peng Zeng ◽  
Sai Bai ◽  
Jinwen Gu ◽  
Faming Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
High Quality

scholarly journals Cesium Titanium(IV) Bromide Thin Films Based Stable Lead-free Perovskite Solar Cells

Joule ◽  
2018 ◽  
Vol 2 (3) ◽  
pp. 558-570 ◽  
Author(s):  
Min Chen ◽  
Ming-Gang Ju ◽  
Alexander D. Carl ◽  
Yingxia Zong ◽  
Ronald L. Grimm ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free

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 Charge Transfer in Mixed-Phase TiO2 Photoelectrodes for Perovskite Solar Cells

2020 ◽  
Vol 12 (3) ◽  
pp. 788 ◽  
Author(s):  
Anna Nikolskaia ◽  
Marina Vildanova ◽  
Sergey Kozlov ◽  
Nikolai Tsvetkov ◽  
Liudmila Larina ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Conversion Efficiency ◽  
Photoelectron Spectroscopy ◽  
High Efficiency ◽  
Anatase Phase ◽  
Perovskite Solar Cells ◽  
Band Alignment ◽  
Mixed Phase ◽  
X Ray

In mesoscopic perovskite solar cells (PSCs) the recombination processes within the TiO2 photoelectrode and at the TiO2/perovskite interface limit power conversion efficiency. To overcome this challenge, we investigated the effect of TiO2 phase composition on the electronic structure of TiO2 photoelectrodes, as well as on PSCs performance. For this, a set of PSCs based on TiO2 thin films with different content of anatase and rutile particles was fabricated under ambient conditions. X-ray diffraction, optical spectroscopy and scanning electron microscopy were used to study the structural, morphological and optical characteristics of TiO2 powders and TiO2-based thin films. X-ray photoelectron spectroscopy (XPS) analysis of anatase revealed a cliff conduction band alignment of 0.2 eV with respect to the rutile. Energy band alignment at the anatase/rutile/perovskite interfaces deduced from the XPS data provides the possibility for interparticle electron transport from the rutile to anatase phase and the efficient blocking of electron recombination at the TiO2/perovskite interface, leading to efficient electron-hole separation in PSCs based on mixed-phase TiO2 photoelectrodes. PSCs based on TiO2 layers with 60/40 anatase/rutile ratio were characterized by optimized charge extraction and low level of recombination at the perovskite/TiO2 interface and showed the best energy conversion efficiency of 13.4% among the studied PSCs. Obtained results provide a simple and effective approach towards the development of the next generation high efficiency PSCs.

High‐Quality Sequential‐Vapor‐Deposited Cs 2 AgBiBr 6 Thin Films for Lead‐Free Perovskite Solar Cells

Solar RRL ◽  
2018 ◽  
Vol 2 (12) ◽  
pp. 1800217 ◽  
Author(s):  
Ming Wang ◽  
Peng Zeng ◽  
Sai Bai ◽  
Jinwen Gu ◽  
Faming Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
High Quality
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