Recent advancements in compact layer development for perovskite solar cells

Mohammadian-Sarcheshmeh, Hamideh; Mazloum-Ardakani, Mohammad

doi:10.1016/j.heliyon.2018.e00912

Cited by 23 publications

(6 citation statements)

References 227 publications

(264 reference statements)

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“…Generally, the increase of thickness of HTL increases the distance of electron transport from the perovskite layer to the ITO. The longer electron diffusion path raises the probability of electron-hole recombination, decreasing the current density and thereby the efficiency [51,52]. However, too thin HTL may lead to incomplete coverage on the surface of the ITO layer and make the perovskite layer contact the ITO layer directly or insufficiently facilitate photo-generated electrons to the ITO layer and block photo-generated holes generated from the perovskite layer.…”

Section: Resultsmentioning

confidence: 99%

Effect of Polyethylene Glycol Incorporation in Electron Transport Layer on Photovoltaic Properties of Perovskite Solar Cells

2020

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Due to the characteristics of high electron mobility, ambient stability, proper energy level, and low processing temperature, zinc oxide (ZnO) has become a very promising electron transport material for photovoltaics. However, perovskite solar cells fabricated with ZnO reveal low efficiency because perovskite crystals may decompose thermally on the surface of ZnO as a result of proton transfer reactions. In this study, we are the first to incorporate an inexpensive, non-toxic polyethylene glycol (PEG) into ZnO and explore the passivation effect on the electron transport layer of perovskite solar cells. Suspension stability, surface roughness, electrical conductivity, crystal size, and photovoltaic properties with respect to the PEG incorporation are analyzed. The experimental results revealed that PEG incorporation effectively passivated the surface defects of ZnO, increased the electrical conductivity, and suppressed the charge recombination. The photocurrent density could increase from 15.2 to 19.2 mA/cm2, an increase of 27%.

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Section: Resultsmentioning

confidence: 99%

Effect of Polyethylene Glycol Incorporation in Electron Transport Layer on Photovoltaic Properties of Perovskite Solar Cells

2020

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“…For the TiO 2 dense layer, the thickness of the film needs to be optimized to realize electron transport. When the ETL is too thick, the electron transport efficiency will be reduced due to the decrease in electron mobility ( Mohammadian-Sarcheshmeh and Mazloum-Ardakani, 2018 ). In the ETL structure of high-efficiency PSCs, the TiO 2 dense layer is usually inserted under the mesoporous layer to prevent device shunting.…”

Section: Commercial Materialsmentioning

confidence: 99%

Advances of Commercial and Biological Materials for Electron Transport Layers in Biological Applications

Yin

Chen

et al. 2022

Front. Bioeng. Biotechnol.

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Electron transport layer (ETL), one of the important layers for high-performing perovskite solar cells (PSCs), also has great potential in bioengineering applications. It could be used for biological sensors, biological imaging, and biomedical treatments with high resolution or efficiency. Seldom research focused on the development of biological material for ETL and their application in biological uses. This review will introduce commercial and biological materials used in ETL to help readers understand the working mechanism of ETL. And the ways to prepare ETL at low temperatures will also be introduced to improve the performance of ETL. Then this review summarizes the latest research on material doping, material modification, and bilayer ETL structures to improve the electronic transmission capacity of ETLs. Finally, the application of ETLs in bioengineering will be also shown to demonstrate that ETLs and their used material have a high potential for biological applications.

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“…In addition, the thickness of the TiO 2 CL needs to be optimized to maximize electron transport from the perovskite to the fluoride-doped tin oxide (FTO) electrode. When the TiO 2 CL is too thick, the resultant increase of the distance of electron transport from the perovskite to FTO lowers the efficiency of charge transport [45]. Conversely, a TiO 2 CL that is too thin cannot efficiently cover the FTO substrate.…”

Section: Tio 2 Compact Layers (Cls)mentioning

confidence: 99%

Metal Oxide Compact Electron Transport Layer Modification for Efficient and Stable Perovskite Solar Cells

et al. 2020

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Perovskite solar cells (PSCs) have appeared as a promising design for next-generation thin-film photovoltaics because of their cost-efficient fabrication processes and excellent optoelectronic properties. However, PSCs containing a metal oxide compact layer (CL) suffer from poor long-term stability and performance. The quality of the underlying substrate strongly influences the growth of the perovskite layer. In turn, the perovskite film quality directly affects the efficiency and stability of the resultant PSCs. Thus, substrate modification with metal oxide CLs to produce highly efficient and stable PSCs has drawn attention. In this review, metal oxide-based electron transport layers (ETLs) used in PSCs and their systemic modification are reviewed. The roles of ETLs in the design and fabrication of efficient and stable PSCs are also discussed. This review will guide the further development of perovskite films with larger grains, higher crystallinity, and more homogeneous morphology, which correlate to higher stable PSC performance. The challenges and future research directions for PSCs containing compact ETLs are also described with the goal of improving their sustainability to reach new heights of clean energy production.

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Recent advancements in compact layer development for perovskite solar cells

Cited by 23 publications

References 227 publications

Effect of Polyethylene Glycol Incorporation in Electron Transport Layer on Photovoltaic Properties of Perovskite Solar Cells

Effect of Polyethylene Glycol Incorporation in Electron Transport Layer on Photovoltaic Properties of Perovskite Solar Cells

Advances of Commercial and Biological Materials for Electron Transport Layers in Biological Applications

Metal Oxide Compact Electron Transport Layer Modification for Efficient and Stable Perovskite Solar Cells

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