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 Analysis of the role of hole transport layer materials to the performance of perovskite solar cell

2018 ◽  
Vol 67 ◽  
pp. 01021 ◽  
Author(s):  
Istighfari Dzikri ◽  
Michael Hariadi ◽  
Retno Wigajatri Purnamaningsih ◽  
Nji Raden Poespawati
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

Research in solar cells is needed to maximize Indonesia’s vast solar potential that can reach up to 207.898 MW with an average radiation of 4.8 kWh/m2/day. Organometallic perovskite solar cells (PSCs) have gained immense attention due to their rapid increase in efficiency and compatibility with low-cost fabrication methods. Understanding the role of hole transport layer is very important to obtain highly efficient PSCs. In this work, we studied the effect of Hole Transport Layer (HTL) to the performance of perovskite solar cell. The devices with HTL exhibit substantial increase in power conversion efficiency, open circuit voltage and short circuit current compared to the device without HTL. The best performing device is PSC with CuSCN as HTL layer, namely Voc of 0.24, Isc of 1.79 mA, 0.27 FF and efficiency of 0.09%.

scholarly journals Probing the energy levels of perovskite solar cells via Kelvin probe and UV ambient pressure photoemission spectroscopy

2016 ◽  
Vol 18 (29) ◽  
pp. 19738-19745 ◽  
Author(s):  
J. R. Harwell ◽  
T. K. Baikie ◽  
I. D. Baikie ◽  
J. L. Payne ◽  
C. Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Open Circuit Voltage ◽  
Ambient Pressure ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Photoemission Spectroscopy ◽  
Kelvin Probe

We present a study of the energy levels present in a perovskite solar cell using Kelvin probe and UV air photoemission measurements. By constructing a detailed map of the energy levels in the system we are able to predict the maximum open circuit voltage of the solar cell.

Optical Simulation and Investigation of the Effect of Hysteresis on the Perovskite Solar Cells

NANO ◽  
2019 ◽  
Vol 14 (10) ◽  
pp. 1950127 ◽  
Author(s):  
Farhad Jahantigh ◽  
S. M. Bagher Ghorashi
Keyword(s):  
Grain Size ◽  
Solar Cells ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer

Perovskite solar cells have recently been considered to be an auspicious candidate for the advancement of future photovoltaic research. A power conversion efficiency (PCE) as high as 22% has been reported to be reached, which can be obtained through an inexpensive and high-throughput solution process. Modeling and simulation of these cells can provide deep insights into their fundamental mechanism of performance. In this paper, two different perovskite solar cells are designed by using COMSOL Multiphysics to optimize the thickness of each layer and the overall thickness of the cell. Electric potential, electron and hole concentrations, generation rate, open-circuit voltage, short-circuit current and the output power were calculated. Finally, PCEs of 20.7% and 26.1% were predicted. Afterwards, according to the simulation results, the role of the hole transport layer (HTL) was investigated and the optimum thickness of the perovskite was measured to be 200[Formula: see text]nm for both cells. Therefore, the spin coating settings are selected so that a coating with this thickness for cell 1 is deposited. In order to compare the performance of HTM layer, solar cells with a Spiro-OMeTAD HTM and without the HTM layer in their structure were fabricated. According to the obtained photovoltaic properties, the solar cell made with Spiro-OMeTAD has a more favorable open-circuit voltage ([Formula: see text]), short-circuit current density ([Formula: see text]), fill factor (FF) and PCE compared to the cell without the HTM layer. Also, hysteresis depends strongly on the perovskite grain size, because large average grain size will lead to an increase in the grain’s contact surface area and a decrease in the density of grain boundaries. Finally, according to the results, it was concluded that, in the presence of a hole transport layer, ion transfer was better and ion accumulation was less intense, and therefore, the hysteresis decreases.

scholarly journals Facile NiOx Sol-Gel Synthesis Depending on Chain Length of Various Solvents without Catalyst for Efficient Hole Charge Transfer in Perovskite Solar Cells

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1227 ◽  
Author(s):  
Byung Kim ◽  
Woongsik Jang ◽  
Dong Wang
Keyword(s):  
Solar Cells ◽  
Chain Length ◽  
Short Circuit ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Perovskite Layer

Nickel oxide (NiOx)–based perovskite solar cells (PSCs) have recently gained considerable interest, and exhibit above 20% photovoltaic efficiency. However, the reported syntheses of NiOx sol-gel used toxic chemicals for the catalysts during synthesis, which resulted in a high-temperature annealing requirement to remove the organic catalysts (ligands). Herein, we report a facile “NiOx sol-gel depending on the chain length of various solvents” method that eschews toxic catalysts, to confirm the effect of different types of organic solvents on NiOx synthesis. The optimized conditions of the method resulted in better morphology and an increase in the crystallinity of the perovskite layer. Furthermore, the use of the optimized organic solvent improved the absorbance of the photoactive layer in the PSC device. To compare the electrical properties, a PSC was prepared with a p-i-n structure, and the optimized divalent alcohol-based NiOx as the hole transport layer. This improved the charge transport compared with that for the typical 1,2-ethanediol (ethylene glycol) used in earlier studies. Finally, the optimized solvent-based NiOx enhanced device performance by increasing the short-circuit current density (Jsc), open-circuit voltage (Voc), and fill factor (FF), compared with those of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)–based devices.

Deposition of P-Type Nanocrystalline Silicon Using High Pressure in a VHF-PECVD Single Chamber System

2011 ◽  
Vol 1321 ◽  
Author(s):  
Xiaodan Zhang ◽  
Guanghong Wang ◽  
Xinxia Zheng ◽  
Shengzhi Xu ◽  
Changchun Wei ◽  
...  
Keyword(s):  
High Pressure ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Nanocrystalline Silicon ◽  
Open Circuit ◽  
Single Chamber ◽  
P Type

ABSTRACTIn this article, we present a study of boron-doped hydrogenated nanocrystalline silicon (nc-Si: H) films by very high frequency-plasma enhanced chemical vapor deposition (VHF-PECVD) using high deposition pressure. Electrical, structural and optical properties of the films were investigated. Dark conductivity as high as 2.75S/cm of p-type nc-Si: H prepared at 2.5Torr pressure has been achieved at a deposition rate of 1.75Å/s for 25nm thin film. By controlling boron and phosphorus contamination, single junction nc-Si: H solar cells incorporated p-layers prepared under high pressure and low pressure, respectively, were deposited. It has been proven that nanocrystalline silicon solar cells with incorporation of p layer prepared at high pressure has resulted in enhanced open circuit voltage, short circuit current density and subsequently high conversion efficiency. Through the optimization of the bottom solar cell and application of ZnO/Al back reflector, 10.59% initial conversion efficiency of micromorph tandem solar cell (1.027cm2) with an open circuit voltage of 1.3864V, has been fabricated, where the bottom solar cell using a high pressure p layer was deposited in a single chamber.

scholarly journals Perovskite Solar Cell with Added Gold/Silver Nanoparticles: Enhanced Optical and Electrical Characteristics

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3854
Author(s):  
Ali Hajjiah ◽  
Hussein Badran ◽  
Ishac Kandas ◽  
Nader Shehata
Keyword(s):  
Solar Cell ◽  
Short Circuit ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Electrical Characteristics ◽  
Ag Nps ◽  
Resonance Frequencies ◽  
Gold Silver

Different perovskite materials, such as methylammonium lead triiodide MAPbI3, exhibit many outstanding and desirable properties in solar energy harvesting. In this paper, the enhancement of perovskite solar cells’ both optical and electrical characteristics through adding either gold (Au) or silver (Ag) nanoparticles (NPs) using different simulations was studied. The used plasmonic nanoparticles were found to be able to compensate for the low absorption of MAPbI3 in the visible with optical coupling resonance frequencies close to that spectrum. Optimal diameters of Au and Ag NPs were found and simulated, and their impact on different parameters such as transmission, absorption, reflection, external quantum efficiency (EQE), open circuit voltage, short-circuit current density, fill factor, and most importantly, efficiency of the perovskite solar cell, have been investigated.

Carbon-Quantum-Dot-Hybridized NiOx Hole-Transport Layer Enables Efficient and Stable Planar p-i-n Perovskite Solar Cells with High Open-Circuit Voltage

2021 ◽  
Author(s):  
Xuefeng Xia ◽  
Dan Zhang ◽  
Xiaofeng Wang ◽  
Zonghu Xiao ◽  
Fan Li
Keyword(s):  
Solar Cell ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Hole Transport ◽  
Band Alignment ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Carbon Quantum Dot

In recent years, the nickel oxide (NiOx)-based planar p-i-n perovskite solar cell (PSC) has progressed rapidly. Nevertheless, poor electrical properties of NiOx, unoptimized band alignment between NiOx and perovskites, as...

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