Crystallographic Understanding of Photoelectric Properties for C60 Derivatives Applicable as Electron Transporting Materials in Perovskite Solar Cells

2021 ◽  
Author(s):  
Zhou Xing ◽  
Shu-Hui Li ◽  
Piao-Yang Xu ◽  
Han-Rui Tian ◽  
Lin-Long Deng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Photoelectric Properties ◽  
C60 Derivatives

scholarly journals Influence of Ag@SiO2 with Different Shell Thickness on Photoelectric Properties of Hole-Conductor-Free Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2364
Author(s):  
Zhiyuan He ◽  
Chi Zhang ◽  
Rangwei Meng ◽  
Xuanhui Luo ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Shell Thickness ◽  
Perovskite Solar Cells ◽  
Current Gain ◽  
Core Shell ◽  
Counter Electrodes ◽  
Shell Nanoparticles ◽  
Photoelectric Properties ◽  
Photosensitive Layer ◽  
Core Shell Nanoparticles

In this paper, Ag@SiO2 core-shell nanoparticles (NPs) with different shell thicknesses were prepared experimentally and introduced into the photosensitive layer of mesoscopic hole-conductor-free perovskite solar cells (PSCs) based on carbon counter electrodes. By combining simulation and experiments, the influences of different shell thickness Ag@SiO2 core-shell nanoparticles on the photoelectric properties of the PSCs were studied. The results show that, when the shell thickness of 0.1 wt% Ag@SiO2 core-shell nanoparticles is 5 nm, power conversion efficiency is improved from 13.13% to 15.25%, achieving a 16% enhancement. Through the measurement of the relevant parameters of the obtained perovskite film, we found that this gain not only comes from the increase in current density that scholars generally think, but also comes from the improvement of the film quality. Like current gain, this gain is related to the different shell thickness of Ag@SiO2 core-shell nanoparticles. Our research provides a new direction for studying the influence mechanism of Ag@SiO2 core-shell nanoparticles in perovskite solar cells.

Effects of thickness on photoelectric properties and perovskite solar cells application of transparent conductive F and Al co-doped ZnO films

Solar Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 126-135 ◽  
Author(s):  
Yanfeng Wang ◽  
Jianmin Song ◽  
Weiye Song ◽  
Ying Tian ◽  
Bing Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Zno Films ◽  
Photoelectric Properties ◽  
Doped Zno ◽  
Co Doped

scholarly journals Performance of perovskite solar cell coated with graphene oxide as hole transport layer

2021 ◽  
Vol 1 (12 (109)) ◽  
pp. 36-43
Author(s):  
Rustan Hatib ◽  
Sudjito Soeparman ◽  
Denny Widhiyanuriyawan ◽  
Nurkholis Hamidi
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Solar Cell ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Degree Of Crystallinity ◽  
Hole Transport Layer ◽  
Photoelectric Properties

Organic metal halide perovskite has recently shown great potential for applications, as it has the advantages of low cost, excellent photoelectric properties, and high power conversion efficiency. The Hole Transport Material (HTM) is one of the most critical components in Perovskite Solar Cells (PSC). It has the function of optimizing the interface, adjusting the energy compatibility, and obtaining higher PCE. The inorganic p-type semiconductor is an alternative HTM due to its chemical stability, higher mobility, increased transparency in the visible region, and general valence band energy level (VB). Here we report the use of the Graphene Oxide (GO) layer as a Hole Transport Layer (HTL) to improve the perovskite solar cells' performance. The crystal structure and thickness of GO significantly affect the increase in solar cell efficiency. This perovskite film must show a high degree of crystallinity. The configuration of the perovskite material is FTO/NiO/GO/CH3NH3PbI3/ZnO/Ag. GO as a Hole Transport Layer can increase positively charged electrons' mobility to improve current and voltage. As a blocking layer that can prevent recombination. The GO can make the perovskite interface layer with smoother holes, and molecular uniformity occurs to reduce recombination. The method used in this study is by using spin coating. In the spin-coating process, the GO layer is coated on top of NiO with variations in the rotation of 700 rpm, 800 rpm, 900 rpm, 1,000 rpm, and 1,500 rpm. The procedure formed different thicknesses from 332.5 nm, 314.7 nm, 256.4 nm, 227.4 to 204.5 nm. The results obtained at a thickness of 227.4 nm reached the optimum efficiency, namely 15,3 %. Thus, the GO material as a Hole Transport Layer can support solar cell performance improvement by not being too thick and thin

Unravelling the role of C60 derivatives as additives into active layers for achieving high-efficiency planar perovskite solar cells

Carbon ◽  
2020 ◽  
Vol 167 ◽  
pp. 160-168
Author(s):  
Lina Hu ◽  
Shiqi Li ◽  
Longlong Zhang ◽  
Yifan Liu ◽  
Chenxi Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Active Layers ◽  
C60 Derivatives

scholarly journals Zn-Doped SnO2 Compact Layer for Enhancing Performance of Perovskite Solar Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Chenjun Yang ◽  
Mengwei Chen ◽  
Jiaqi Wang ◽  
Haifei Lu
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Compact Layer ◽  
Conductivity Enhancement ◽  
Photoelectric Properties ◽  
Photoelectric Performance ◽  
Doping Modification

Perovskite solar cells (PSCs) have been developing rapidly since they were discovered, and their excellent photoelectric properties have attracted wide attention from researchers. The compact layer is an important part of PSCs, which can transport electrons and block holes. SnO2 is an excellent and commonly used electron transport layer (ETL) material, and doping modification is an effective way to improve performance. Here, Zn with a similar radius to Sn has been introduced to the doping of the SnO2 compact layer to achieve the purposes of conductivity enhancement of the compact layer and followed photoelectric performance improvement of the device. Zn-SnO2 compact layers with different doping concentrations were prepared and applied to mesoporous architecture PSCs. When the doping content was 5%, the power conversion efficiency (PCE) of the device based on the Zn-SnO2 compact layer has increased from 9.08% to 10.21%, with an increase of 12.44%. The doping of SnO2 promotes its application in low-cost PSCs.

scholarly journals DFT and TD-DFT Studies of 1,3,5-Tris (Dipheny1amino) Benzene Derivatives Based Hole Transport Materials: Application for Perovskite Solar Cells

2022 ◽  
Author(s):  
nambury surendra babu ◽  
Irene Octavian Riwa
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Basis Set ◽  
Frontier Molecular Orbital ◽  
Benzene Derivatives ◽  
Photoelectric Properties ◽  
Td Dft ◽  
Reorganization Energies

Abstract The current study examined a series of 1,3,5-tris (diphenylamino) benzene derivatives used as hole transport materials in perovskite solar cells (HTM1-HTM9). DFT and TD/DFT with the B3LYP/6-311G basis set used for all calculations. The ground state geometry, frontier molecular orbital (FMO), photoelectric properties and reorganization energies and the absorption spectra were investigated. The energy levels of HOMO and LUMO orbitals were calculated for HTM1-HTM9, compared to all of the compounds under investigation and the spiro-OMeTAD, HTM 8 has the lowest HOMO energy level, indicating a favourable overlap with the MAPbI3 perovskite active layer.

scholarly journals Dopants for Enhanced Performance of Tin-Based Perovskite Solar Cells—A Short Review

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1045
Author(s):  
Hairui Liu ◽  
Zuhong Zhang ◽  
Feng Yang ◽  
Jien Yang ◽  
Andrews Nirmala Grace ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Short Review ◽  
Water Soluble ◽  
Lead Free ◽  
Silicon Solar Cells ◽  
Photoelectric Properties ◽  
General Chemical ◽  
Alternative Material ◽  
The Stability

Lead-based perovskite solar cells had reached a bottleneck and demonstrated significant power conversion efficiency (PCE) growth matching the performance of traditional polycrystalline silicon solar cells. Lead-containing perovskite solar cell technology is on the verge of commercialization and has huge potential to replace silicon solar cells, but despite the very promising future of these perovskite solar cells, the presence of water-soluble toxic lead content is a growing concern in the scientific community and a major bottleneck for their commercialization. The less toxic, tin-based perovskite solar cells are promising alternatives for lead-free perovskite solar cells. Like lead-based perovskite, the general chemical formula composition of tin-based perovskite is ASnX3, where A is a cation and X is an anion (halogen). It is evident that tin-based perovskites, being less-toxic with excellent photoelectric properties, show respectable performance. Recently, numerous studies reported on the fabrication of Sn-based perovskite solar cells. However, the stability of this novel lead-free alternative material remains a big concern. One of the many ways to stabilize these solar cells includes addition of dopants. In this context, this article summarizes the most important fabrication routes employing dopants that have shown excellent stability for tin-based perovskite photovoltaics and elaborates the prospects of lead-free, tin based stable perovskite photovoltaics.

scholarly journals Study on Preparation and Stability of Perovskite Solar Cells with Supramolecular Interaction

2020 ◽  
Vol 185 ◽  
pp. 01065
Author(s):  
Qing Zhu ◽  
Chengsheng Li
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Optical Absorption Coefficient ◽  
Photoelectric Conversion Efficiency ◽  
Supramolecular Interaction ◽  
Photoelectric Conversion ◽  
Ion Migration ◽  
Photoelectric Properties ◽  
Perovskite Materials ◽  
The Stability

In recent years, perovskite solar cells have been developed rapidly because of its excellent crystalline properties, high optical absorption coefficient, high carrier mobility, long carrier life and direct band gap, and suitable to be used as light absorbing layer material of photovoltaic devices. However, the most prominent problem of perovskite materials is that a lot of organic cations will migrate and lose in the process of illumination or heating, which is considered to be the main reason for the performance degradation of perovskite films and devices. Therefore, the suppression of ion migration in perovskite is helpful to improve the stability of perovskite materials and devices and enhance their photoelectric properties. In order to effectively control the ion migration in perovskite films, this paper uses the cation-π supramolecular interaction, to prepare the perovskite films with better photoelectric performance and higher stability. The experimental results show that the photoelectric conversion efficiency of the perovskite solar cellsdevice doped with rubrene is increased from 18.60% to 20.86%, and the hysteresis of the cell is also significantly suppressed.

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