Exploring the growth of MAPbI3 under different preparation methods for mesoporous perovskite solar cells

2021 ◽  
Author(s):  
Liguo Jin ◽  
Yuwen Wang ◽  
Jing Wu ◽  
LiPing Zhao ◽  
Hong Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Critical Role ◽  
Perovskite Solar Cells ◽  
Photocurrent Density ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Preparation Methods ◽  
Mesoporous Film

The control of the perovskite growth morphology plays an extremely critical role in mesoporous perovskite solar cells. In this paper, anatase TiO2 nanoparticles (NPs) with high crystallinity were synthesized by a hydrothermal method, and the thickness of the TiO2 mesoporous film (TiO2-MT) was adjusted with concentration of TiO2-NP slurry by controlling ethanol. The perovskite layers were prepared by the traditional two-step (TTS) method, and the improved two-step (ITS) method was used. It is proved that different preparation processes of the perovskite light-absorbing layers have a certain influence on the photoelectric performance of the cell device, but also, the thickness of the TiO2mesoporous film affects the electron transport efficiency at the TiO2/MAPbI3 interface and the suppression of electron–hole recombination through [Formula: see text]–[Formula: see text] positive and negative scanning, electrochemical impedance spectroscopy (EIS) and dark state [Formula: see text]–[Formula: see text] curve analysis of the device. By optimizing the thickness of the TiO2 mesoporous film, the short-circuit photocurrent density ([Formula: see text] of mesoporous perovskite solar cells (M-PSCs) based on the TiO2 mesoporous electron transporting layer of 400 nm thickness is 23.85 mA/cm2, and the optimal photoelectric conversion efficiency (PCE) is 15.38%.

scholarly journals Application of Diaminium Iodides in Binary Ionic Liquid Electrolytes for Dye-Sensitized Solar Cells

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Yanzhen Yang ◽  
Renjie Sun ◽  
Chengwu Shi ◽  
Yucheng Wu ◽  
Mei Xia
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

N-(2-hydroxyethyl)ethylenediaminium iodides (HEEDAIs) and N-(2-hydroxyethyl)piperazinium iodides (HEPIs) were synthesized, and their thermal properties were analysed. The influence of HEEDAI and HEPI onI3-/I-redox behavior in binary ionic liquid was investigated. The result revealed that HEEDAI can suppress the recombination betweenI3-and the injected electrons in TiO2conduction band and be used as the alternative of 4-tert-butylpyridine in the electrolyte of dye-sensitized solar cells. The electrolyte C, 0.15 mol⋅L−1I2, HEEDAI and MPII with mass ratio of 1 : 4, gave the short-circuit photocurrent density of 9.36 mA⋅cm−2, open-circuit photovoltage of 0.67 V, fill factor of 0.52, and the corresponding photoelectric conversion efficiency of 3.24% at the illumination (air mass 1.5, 100 mW⋅cm−2, active area 0.25 cm2).

Low-Temperature Processed TiO2 Nanoparticle Layer with Inorganic Binder for Perovskite Solar Cell

2020 ◽  
Vol 12 (2) ◽  
pp. 276-281
Author(s):  
Seulki Cho ◽  
Jihun Jang ◽  
Mansik Jo ◽  
Sang-Woo Song ◽  
Suyeol Jang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Titanium Isopropoxide ◽  
Molar Ratio ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Inorganic Binder

In this study, we report on the low-temperature (<120 °C) fabrication of a mesoporous titanium dioxide (TiO2) layer for use in perovskite solar cells. The TiO2 layer used was produced from a solution of TiO2 nanoparticles, purified water and titanium isopropoxide (TTIP) acting as a precursor of an inorganic binder network. We compared the properties of TiO2 layers resulting from different molar ratios (ranging from 0.1:1∼0.5:1) of titanium isopropoxide to TiO2 nanoparticles. Finally, perovskite solar cells were fabricated based on our optimized TiO2 molar ratio (TTIP:TiO2 = 0.1:1) and found to exhibit a short-circuit current density of ∼16.01 mA cm–2 and photoelectric conversion efficiency of ∼5.57%, respectively.

scholarly journals Effects of Different Doping Ratio of Cu Doped CdS on QDSCs Performance

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Xiaojun Zhu ◽  
Xiaoping Zou ◽  
Hongquan Zhou
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Sensitized Solar Cells ◽  
Doping Ratio

We use the successive ionic layer adsorption and reaction (SILAR) method for the preparation of quantum dot sensitized solar cells, to improve the performance of solar cells by doping quantum dots. We tested the UV-Vis absorption spectrum of undoped CdS QDSCs and Cu doped CdS QDSCs with different doping ratios. The doping ratios of copper were 1 : 100, 1 : 500, and 1 : 1000, respectively. The experimental results show that, under the same SILAR cycle number, Cu doped CdS quantum dot sensitized solar cells have higher open circuit voltage, short circuit current density photoelectric conversion efficiency than undoped CdS quantum dots sensitized solar cells. Refinement of Cu doping ratio are 1 : 10, 1 : 100, 1 : 200, 1 : 500, and 1 : 1000. When the proportion of Cu and CdS is 1 : 10, all the parameters of the QDSCs reach the minimum value, and, with the decrease of the proportion, the short circuit current density, open circuit voltage, and the photoelectric conversion efficiency are all increased. When proportion is 1 : 500, all parameters reach the maximum values. While with further reduction of the doping ratio of Cu, the parameters of QDSCs have a decline tendency. The results showed that, in a certain range, the lower the doping ratio of Cu, the better the performance of quantum dot sensitized solar cell.

scholarly journals CuI/Spiro-OMeTAD Double-Layer Hole Transport Layer to Improve Photovoltaic Performance of Perovskite Solar Cells

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 978
Author(s):  
Chaoqun Lu ◽  
Weijia Zhang ◽  
Zhaoyi Jiang ◽  
Yulong Zhang ◽  
Cong Ni
Keyword(s):  
Solar Cells ◽  
Double Layer ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Perovskite Layer

The hole transport layer (HTL) is one of the main factors affecting the efficiency and stability of perovskite solar cells (PSCs). However, obtaining HTLs with the desired properties through current preparation techniques remains a challenge. In the present study, we propose a new method which can be used to achieve a double-layer HTL, by inserting a CuI layer between the perovskite layer and Spiro-OMeTAD layer via a solution spin coating process. The CuI layer deposited on the surface of the perovskite film directly covers the rough perovskite surface, covering the surface defects of the perovskite, while a layer of CuI film avoids the defects caused by Spiro-OMetad pinholes. The double-layer HTLs improve roughness and reduce charge recombination of the Spiro-OMeTAD layer, thereby resulting in superior hole extraction capabilities and faster hole mobility. The CuI/Spiro-OMeTAD double-layer HTLs-based devices were prepared in N2 gloveboxes and obtained an optimized PCE (photoelectric conversion efficiency) of 17.44%. Furthermore, their stability was improved due to the barrier effect of the inorganic CuI layer on the entry of air and moisture into the perovskite layer. The results demonstrate that another deposited CuI film is a promising method for realizing high-performance and air-stable PSCs.

scholarly journals A down-shifting Eu 3+ -doped Y 2 WO 6 /TiO 2 photoelectrode for improved light harvesting in dye-sensitized solar cells

2018 ◽  
Vol 5 (2) ◽  
pp. 171054 ◽  
Author(s):  
J. Llanos ◽  
I. Brito ◽  
D. Espinoza ◽  
Ramkumar Sekar ◽  
P. Manidurai
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Light Harvesting ◽  
Electrochemical Impedance ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Visible Radiation ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Y 1.86 Eu 0.14 WO 6 phosphors were prepared using a solid-state reaction method. Their optical properties were analysed, and they was mixed with TiO 2 , sintered, and used as a photoelectrode (PE) in dye-sensitized solar cells (DSSCs). The as-prepared photoelectrode was characterized by photoluminescence spectroscopy, diffuse reflectance, electrochemical impedance spectroscopy (EIS) and X-ray diffraction. The photoelectric conversion efficiency of the DSSC with TiO 2 :Y 1.86 Eu 0.14 WO 6 (100:2.5) was 25.8% higher than that of a DSCC using pure TiO 2 as PE. This high efficiency is due to the ability of the luminescent material to convert ultraviolet radiation from the sun to visible radiation, thus improving the solar light harvesting of the DSSC.

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.

Application of ZnO Nanostructure by Hydrothermal Growth in Quantum Dot Sensitized Solar Cells

2014 ◽  
Vol 875-877 ◽  
pp. 1904-1907
Author(s):  
Bao Li Zhang ◽  
X.P. Zou ◽  
X.M. Lv ◽  
G.Q. Yang ◽  
C.L. Wei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Short Circuit ◽  
Hydrothermal Growth ◽  
Photoelectric Conversion Efficiency ◽  
Flower Structure ◽  
Photoelectric Conversion ◽  
Nanostructure Materials ◽  
Zno Nanostructure ◽  
Sensitized Solar Cells

In this paper, we mainly talk about two kinds of ZnO nanostructure materials which are rod and flower structure by hydrothermal growth as photoanode of quantum dot sensitized solar cells (QDSSCs). Using chemical bath deposition to assemble CdS quantum dots onto ZnO nanostructure materials, and after different CBD cycles we could get the cell parameters of different CBD cycles respectively in their I-V curves, from which we could see it is the flower structure that has the highest efficiency which is 0.346% after 9 CBD cycles and the short-circuit current is 2.88 mA/cm2. Therefore, we could see that ZnO flower structure has a potential application in solar cell devices as the photoelectrode to gain higher photoelectric conversion efficiency (PCE).

scholarly journals Effects of Decaphenylcyclopentasilane Addition on Photovoltaic Properties of Perovskite Solar Cells

Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 461 ◽  
Author(s):  
Masaya Taguchi ◽  
Atsushi Suzuki ◽  
Takeo Oku ◽  
Sakiko Fukunishi ◽  
Satoshi Minami ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Perovskite Layer ◽  
Photovoltaic Properties ◽  
Photovoltaic Characteristics ◽  
Conversion Efficiencies

Perovskite solar cells, in which decaphenylcyclopentasilane (DPPS) layers were formed on the surface of the perovskite layer, were fabricated, and the influence on photovoltaic characteristics was investigated. The devices were fabricated by a spin-coating technique, and the surface morphology and crystal structures were investigated by scanning electron microscopy and X-ray diffraction. By adding the DPPS, the fill factor and open circuit voltage were increased, and the photoelectric conversion efficiency was improved. A stability test in ambient air was carried out for seven weeks, and the photoelectric conversion efficiencies were remarkably improved for the devices with DPPS.

scholarly journals Cu-Doped-CdS/In-Doped-CdS Cosensitized Quantum Dot Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Lin Li ◽  
Xiaoping Zou ◽  
Hongquan Zhou ◽  
Gongqing Teng
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Quantum Dot Solar Cells ◽  
Cds Quantum Dot

Cu-doped-CdS and In-doped-CdS cosensitized (Cu-doped-CdS/In-doped-CdS) quantum dot solar cells (QDSCs) are introduced here. Different cosensitized sequences, doping ratios, and the thickness (SILAR cycles) of Cu-doped-CdS and In-doped-CdS are discussed. Compared with undoped CdS QDSCs, the short circuit current density, UV-Vis absorption spectra, IPCE (monochromatic incident photon-to-electron conversion), open circuit voltage, and so on are all improved. The photoelectric conversion efficiency has obviously improved from 0.71% to 1.28%.

Study on Properties of Dye-Sensitized TiO2 Films

2012 ◽  
Vol 602-604 ◽  
pp. 1492-1496
Author(s):  
Wei Cong ◽  
Jiang Li ◽  
En Xiang Han
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Tetrabutyl Titanate ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Hydrothermal Temperature ◽  
Dye Sensitized ◽  
Photoelectric Properties ◽  
Titania Films

TiO2nanoporous thin films were fabricated by the hydrothermal method using tetrabutyl titanate as the precursor and used to assemble dye-sensitized solar cells. The properties which include the short-circuit photocurrent(ISC),open-circuit voltage(VOC) and the fill factor(FF)of the solar cells were tested. The microstructure of titania films were modulated by changing the hydrothermal reaction temperature and the amount of PEG and the influence on the properties of the solar cells by titania films weas studied. The results indicate that there are better photoelectric properties for TiO2films at the hydrothermal temperature fo 230°C and the additive amount of PEG being 5% of the mass of TiO2. ISC,VOCand FF was 12.42mA, 681mV, and 0.52 respectively, the photoelectric conversion efficiency(η)was 4.37%．

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