Enhancing efficiency and stability of perovskite solar cells via in-situ incorporation of lead sulfide layer

2021 ◽  
Author(s):  
Yue Zhang ◽  
Yuxia Han ◽  
Yanting Xu ◽  
Guanghui Yu ◽  
Yu Miao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Lead Sulfide ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Great Influence ◽  
Trap States ◽  
Sulfide Layer

The trap states at the surface and grain boundaries of perovskite films have a great influence on the photovoltaic performance and stability of perovskite solar cells (PSCs). Herein, lead sulfide...

Fabrication toward Stable Perovskite Solar Cells with Efficiency over 20% under Open Air via In-situ Polymerized Bi-functional Additive

2022 ◽  
Author(s):  
Lei Ning ◽  
Providence Buregeya Ingabire ◽  
Ningxia Gu ◽  
Ping-Fan Du ◽  
Dongfang Lv ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Functional Additive

Essentially, detrimental defects distributed at perovskite surface and grain boundaries (GBs) directly impede the further enhancement of both the photovoltaic performance and long-term stability of perovskite solar cells (PSCs). Herein,...

Distribution of bromine in mixed iodide–bromide organolead perovskites and its impact on photovoltaic performance

2016 ◽  
Vol 4 (41) ◽  
pp. 16191-16197 ◽  
Author(s):  
Yang Zhou ◽  
Feng Wang ◽  
Hong-Hua Fang ◽  
Maria Antonietta Loi ◽  
Fang-Yan Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Defect States ◽  
Halide Perovskite

The bromine has the role of passivating defect states at grain boundaries and interfaces in mixed halide perovskite solar cells.

scholarly journals 2D materials for conducting holes from grain boundaries in perovskite solar cells

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Peng You ◽  
Guanqi Tang ◽  
Jiupeng Cao ◽  
Dong Shen ◽  
Tsz-Wai Ng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Performance Enhancement ◽  
2D Materials ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solution Process ◽  
High Mobility ◽  
Cost Effective ◽  
Hole Transport

AbstractGrain boundaries in organic–inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices. Here, we develop a unique approach to overcome this problem by modifying the edges of perovskite grain boundaries with flakes of high-mobility two-dimensional (2D) materials via a convenient solution process. A synergistic effect between the 2D flakes and perovskite grain boundaries is observed for the first time, which can significantly enhance the performance of PSCs. We find that the 2D flakes can conduct holes from the grain boundaries to the hole transport layers in PSCs, thereby making hole channels in the grain boundaries of the devices. Hence, 2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the devices. This work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2D materials.

High efficiency MAPbI3−xClx perovskite solar cell via interfacial passivation

Nanoscale ◽  
2018 ◽  
Vol 10 (40) ◽  
pp. 18909-18914 ◽  
Author(s):  
Sijian Yuan ◽  
Jiao Wang ◽  
Kunlong Yang ◽  
Pengfei Wang ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Charge Transport ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Great Influence ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Trap States ◽  
Charge Transport Layer

The trap states at the interface between perovskite and charge-transport layer have a great influence on the performance of perovskite solar cells.

scholarly journals Plasmon-induced trap filling at grain boundaries in perovskite solar cells

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Kai Yao ◽  
Siqi Li ◽  
Zhiliang Liu ◽  
Yiran Ying ◽  
Petr Dvořák ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundaries ◽  
Density Functional ◽  
Deep Level ◽  
Photophysical Properties ◽  
Perovskite Solar Cells ◽  
Density Functional Theory Calculations ◽  
Transient Absorption Spectroscopy ◽  
Plasmonic Nanostructures ◽  
Trap States

AbstractThe deep-level traps induced by charged defects at the grain boundaries (GBs) of polycrystalline organic–inorganic halide perovskite (OIHP) films serve as major recombination centres, which limit the device performance. Herein, we incorporate specially designed poly(3-aminothiophenol)-coated gold (Au@PAT) nanoparticles into the perovskite absorber, in order to examine the influence of plasmonic resonance on carrier dynamics in perovskite solar cells. Local changes in the photophysical properties of the OIHP films reveal that plasmon excitation could fill trap sites at the GB region through photo-brightening, whereas transient absorption spectroscopy and density functional theory calculations correlate this photo-brightening of trap states with plasmon-induced interfacial processes. As a result, the device achieved the best efficiency of 22.0% with robust operational stability. Our work provides unambiguous evidence for plasmon-induced trap occupation in OIHP and reveals that plasmonic nanostructures may be one type of efficient additives to overcome the recombination losses in perovskite solar cells and thin-film solar cells in general.

scholarly journals Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques

2021 ◽  
pp. 2248-2255
Author(s):  
Agustín Bou ◽  
Haralds A̅boliņš ◽  
Arjun Ashoka ◽  
Héctor Cruanyes ◽  
Antonio Guerrero ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Carrier Diffusion ◽  
Diffusion Parameters ◽  
Charge Carrier Diffusion

scholarly journals The Influence of the Thickness of Compact TiO2 Electron Transport Layer on the Performance of Planar CH3NH3PbI3 Perovskite Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3295
Author(s):  
Andrzej Sławek ◽  
Zbigniew Starowicz ◽  
Marek Lipiński
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Transport Layer ◽  
Electron Transport Layer

In recent years, lead halide perovskites have attracted considerable attention from the scientific community due to their exceptional properties and fast-growing enhancement for solar energy harvesting efficiency. One of the fundamental aspects of the architecture of perovskite-based solar cells (PSCs) is the electron transport layer (ETL), which also acts as a barrier for holes. In this work, the influence of compact TiO2 ETL on the performance of planar heterojunction solar cells based on CH3NH3PbI3 perovskite was investigated. ETLs were deposited on fluorine-doped tin oxide (FTO) substrates from a titanium diisopropoxide bis(acetylacetonate) precursor solution using the spin-coating method with changing precursor concentration and centrifugation speed. It was found that the thickness and continuity of ETLs, investigated between 0 and 124 nm, strongly affect the photovoltaic performance of PSCs, in particular short-circuit current density (JSC). Optical and topographic properties of the compact TiO2 layers were investigated as well.

scholarly journals Abnormal spatial heterogeneity governing charge-carrier mechanism in efficient Ruddlesden-Popper perovskite solar cells

2021 ◽  
Author(s):  
Jun Xi ◽  
Junseop Byeon ◽  
Unsoo Kim ◽  
Kijoon Bang ◽  
Gi Rim Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Spatial Heterogeneity ◽  
Real Time ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Carrier Mechanism

Layered Ruddlesden–Popper perovskite (RPP) photovoltaics have gained substantial attention owing to their excellent air stability. However, their photovoltaic performance is still limited by the unclear real-time charge-carrier mechanism of operating...

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