scholarly journals Influences of Precursor Solution Concentration and Temperature on CH3NH3PbI3 Perovskite Layer Morphology and the Unconverted PbI2 Proportion to their Perovskite Solar Cell Characteristics

2017 ◽  
Vol 877 ◽  
pp. 012046 ◽  
Author(s):  
Mhd. Ikhsan Alturisa ◽  
Joe Wira ◽  
Mardiyati ◽  
Herman ◽  
Rahmat Hidayat
Keyword(s):  
Solar Cell ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Perovskite Solar Cell ◽  
Perovskite Layer ◽  
Precursor Solution Concentration

Modeling of Abnormal Hysteresis in CsPbBr3 based Perovskite Solar Cells

2021 ◽  
Vol 34 (1) ◽  
pp. 01-08
Author(s):  
B GopalKrishna ◽  
Sanjay Tiwari
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Simulation Study ◽  
Open Circuit Voltage ◽  
Layer Structure ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Perovskite Layer

Perovskite solar cells are emerging photovoltaic devices with PCE of above 25%. Perovskite are suitable light absorber materials in solar cells with excellent properties like appropriate band gap energy, long carrier lifetime and diffusion length, and high extinction coefficient. Simulation study is an important technique to understand working mechanisms of perovskites solar cells. The study would help develop efficient, stable PSCs experimentally. In this study, modeling of perovskite solar cell was carried out through Setfos software. The optimization of different parameters of layer structure of solar cell would help to achieve maximum light absorption in the perovskite layer of solar cell. Simulation study is based drift-diffusion model to study the different parameters of perovskite solar cell. Hysteresis is one of the factors in the perovskite solar cell which may influence the device performance. The measurement of abnormal hysteresis can be done by current-voltage curve during backward scan during simulation study. In backward scan, the measurement starts from biasing voltage higher than open circuit voltage and sweep to voltage below zero. The numerical simulation used to study the various parameters like open circuit voltage, short circuit current, fill factor, power conversion efficiency and hysteresis. The simulation results would help to understand the photophysics of solar cell physics which would help to fabricate highly efficient and stable perovskite solar cells experimentally.

Reduced open-circuit voltage loss for highly efficient low-bandgap perovskite solar cells via suppression of silver diffusion

2019 ◽  
Vol 7 (29) ◽  
pp. 17324-17333 ◽  
Author(s):  
Meiyue Liu ◽  
Ziming Chen ◽  
Yongchao Yang ◽  
Hin-Lap Yip ◽  
Yong Cao
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Level ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Perovskite Layer ◽  
Low Bandgap ◽  
Voltage Loss

Ag diffused across the PCBM layer increased the trap density and down-shifted the energy level of the perovskite layer. Fortunately, PCBM/ZnO layer efficiently suppressed the Ag diffusion, resulting in a perovskite solar cell with PCE of 18.1%.

scholarly journals Impact of Perovskite Composition on Film Formation Quality and Photophysical Properties for Flexible Perovskite Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 732 ◽  
Author(s):  
Guangdong Li ◽  
Xiaoping Zou ◽  
Jin Cheng ◽  
Dan Chen ◽  
Yujun Yao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Film Formation ◽  
Photophysical Properties ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Precursor Solution Concentration ◽  
Composition Optimization ◽  
A Site ◽  
Low Temperature Process

In recent years, flexible perovskite solar cells have drawn tremendous attention in the field of wearable devices, and optimization of perovskite composition plays an important role in improving film quality and photophysical properties. At present, some researchers have only studied A-site organic cations mixing or X-site halide anions mixing in the ABX3 structure of perovskite, but there are few reports on co-mixing of A-site and X-site ions in flexible perovskite solar cells. In this paper, we mainly try to study the effects of different concentrations of mixed formamidine methylamine halide (FAxMA1-xBrxClyI1-x-y) precursor solutions on the quality and photophysical properties of perovskite films under low temperature process. We conclude that the film quality and photophysical properties reached the best results when the optimized precursor solution concentration was 60:6:6. The investigation on composition optimization in this experiment laid the foundation for the improvement of the performance of flexible perovskite solar cells. We also use the results of this experiment to prepare flexible perovskite solar cells based on carbon electrodes, which are expected to be applied in other flexible optoelectronic or electro-optical devices.

scholarly journals IonMonger: a free and fast planar perovskite solar cell simulator with coupled ion vacancy and charge carrier dynamics

2019 ◽  
Vol 18 (4) ◽  
pp. 1435-1449 ◽  
Author(s):  
N. E. Courtier ◽  
J. M. Cave ◽  
A. B. Walker ◽  
G. Richardson ◽  
J. M. Foster
Keyword(s):  
Solar Cell ◽  
Charge Carrier ◽  
Carrier Transport ◽  
Temporal Integration ◽  
Differential Algebraic Equations ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Algebraic Equations ◽  
Perovskite Layer ◽  
Current Voltage

Abstract Details of an open-source planar perovskite solar cell simulator, which includes ion vacancy migration within the perovskite layer coupled to charge carrier transport throughout the perovskite and adjoining transport layers in one dimension, are presented. The model equations are discretised in space using a finite element scheme, and temporal integration of the resulting system of differential algebraic equations is carried out in MATLAB. The user is free to modify device parameters, as well as the incident illumination and applied voltage. Time-varying voltage and/or illumination protocols can be specified, e.g. to simulate current–voltage sweeps, or to track the open-circuit conditions as the illumination is varied. Typical simulations, e.g. current–voltage sweeps, only require computation times of seconds to minutes on a modern personal computer. An example set of hysteretic current–voltage curves is presented.

A perovskite solar cell textile that works at −40 to 160 °C

2020 ◽  
Vol 8 (11) ◽  
pp. 5476-5483 ◽  
Author(s):  
Limin Xu ◽  
Xuemei Fu ◽  
Fei Liu ◽  
Xiang Shi ◽  
Xufeng Zhou ◽  
...  
Keyword(s):  
Solar Cell ◽  
Buffer Layer ◽  
Perovskite Solar Cell ◽  
Perovskite Layer ◽  
Electrode Surfaces ◽  
Stress Buffer ◽  
Fiber Electrode

A wearable solar cell textile that works at −40 to 160 °C has been achieved by designing a compact perovskite layer on aligned TiO2 nanotubes to act as a stress buffer layer on fiber electrode surfaces.

Enhancement of Perovskite Solar-Cell Efficiency Using FAPbBr3/I3 with Methylammonium Chloride

2021 ◽  
Vol 16 (6) ◽  
pp. 879-883
Author(s):  
Sung Hwan Joo ◽  
Chung Wung Bark ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Precursor Solution ◽  
Perovskite Solar Cell ◽  
Hexagonal Structure ◽  
Lead Iodide ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Α Phase ◽  
Methylammonium Chloride ◽  
Δ Phase

Organic/inorganic metal halide formamidinium lead iodide (FAPbI3) perovskites exhibit excellent optical properties, a suitable band gap, a wide light-absorption range, and superior electron-hole mobility. However, it is difficult to fabricate high-quality α-phase FAPbI3 film due to the relatively easy formation of the more stable δ-FAPbI3 (hexagonal structure). To overcome this, in this study, formamidinium lead bromide (FAPbBr3) was used to induce the synthesis of stable α-phase FAPbI3. The resulting light-absorbing layer was composed of (FAPbI3)0.95 (FAPbBr3)0.05, but δ-phase FAPbI3 could be still observed. To suppress the formation of δ-phase FAPbI3 , methylammonium chloride (MACl) was added to the (FAPbI3)0.95 (FAPbBr3)0.05 precursor solution. At an optimal MACl content of 40 mol%, perovskites with improved crystallinity and large crystallite size could be fabricated, resulting in a perovskite solar-cell efficiency of 18.204%.

Desulfurization and Regeneration Performance of Sorbent Prepared by Subcritical Water Impregnation

2013 ◽  
Vol 743-744 ◽  
pp. 443-448
Author(s):  
Hao Chen Qin ◽  
Lian Wei Liu ◽  
Wei Ping Si ◽  
Li Ping Chang ◽  
Wei Ren Bao ◽  
...  
Keyword(s):  
Subcritical Water ◽  
Precursor Solution ◽  
Nitrogen Adsorption ◽  
Solution Concentration ◽  
X Ray Diffraction ◽  
Active Components ◽  
Precursor Solution Concentration ◽  
Impregnation Time ◽  
Mechanical Strengths ◽  
Autoclave Reactor

A series of metal oxides sorbents supported on γ-Al2O3 were directly prepared by subcritical water impregnation (SCWI) method using an autoclave reactor. The effects of active components, preparation pressure, temperature, and time on the desulfurization activity of sorbents in hot coal-based gases at mid-temperature were investigated. The samples were characterized by X-ray diffraction (XRD), nitrogen adsorption and atomic absorption spectrophotometer (AAS). The results showed that Mn-based sorbent loaded on γ-Al2O3 by SCWI presented a good desulfurization performance. The optimal preparation parameters of sorbent were the temperature of 350 °C, the pressure of 18.9 MPa, impregnation time of 30 min, the precursor solution concentration of 0.287 mol/L and the volume of 100 ml, respectively. The Mn/γ-Al2O3 sorbent prepared under the optimal conditions presented a good desulfurization precision and regeneration performance. After regeneration, the mechanical strengths of the sorbents were higher than that of raw support and the breakthrough time at the desulfurization efficiency of above 99% was not obviously decreased.

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