Acid treatment of perovskite solar cells
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Herein, tannic acid (TA) was introduced as a crosslinking agent to modify the perovskite layer. Fig. 1 (a) depicts the molecular structure of TA, a naturally existing polyphenolic chemical that is inexpensive and widely available, mostly derived from plants (Energy Chemical, 30 RMB/25 g) [29], [30].The phenolic functional groups included in TA …
Interfacial modification using the cross-linkable tannic acid for ...
Herein, tannic acid (TA) was introduced as a crosslinking agent to modify the perovskite layer. Fig. 1 (a) depicts the molecular structure of TA, a naturally existing polyphenolic chemical that is inexpensive and widely available, mostly derived from plants (Energy Chemical, 30 RMB/25 g) [29], [30].The phenolic functional groups included in TA …
Defects and Defect Passivation in Perovskite Solar Cells
Perovskite solar cells have made significant strides in recent years. However, there are still challenges in terms of photoelectric conversion efficiency and long-term stability associated with perovskite solar cells. The presence of defects in perovskite materials is one of the important influencing factors leading to subpar film quality. …
Lewis bases: promising additives for enhanced performance of perovskite ...
Such perovskite solar cells show extensive stability and PCE of 20.7% compared with 17.72% in reference solar cells. 3.5. Anti-solvent engineering/surface treatment of perovskite via Lewis acid-base effect. The addition of antisolvent during the fabrication of perovskite has improved its crystallinity and photovoltaic properties.
Acid molecule-assisted high-quality SnO2 transport layer for perovskite ...
The SnO 2 electron transport layer (ETL) serves a critical role in perovskite solar cells. However, the oxygen vacancy defects and excess hydroxyl (–OH) groups in SnO 2 always lead to degradation of device performance. Herein, we introduce iminodiacetic acid (IDA) to modify the SnO 2 ETL, yielding three key advantages: (1) IDA …
Reinforcing self-assembly of hole transport molecules for stable …
One approach for improving the power conversion efficiencies (PCEs) of inverted perovskite solar cells (PSCs) has been to use self-assembled monolayers (SAMs), such as [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) and its derivatives, as hole transport materials (HTMs) (1, 2).The main reasons why SAMs enhance PCEs …
Nickel Oxide for Perovskite Photovoltaic Cells
Organic–inorganic perovskite solar cells (PSCs) have shown tremendous progress from 3.8% power conversion efficiency (PCE) in 2003 to 25.2% in 2020 because of their wide range of light absorption, fast charge separation, long carrier diffusion length, and long ...
Carboxyl functional group-assisted defects passivation strategy …
Defects existing in perovskite as the intrinsic reason induced the planar perovskite solar cells (PSCs) with inferior performance and stability, and I − ion migration is one of the critical factors. We adopted Lewis acid-base adduct passivation method and terephthalic acid (PTA) as the passivation agent to anchor the uncoordinated Pb 2+, thus …
Acid Dissociation Constant: A Criterion for Selecting Passivation ...
Although post-treatment has been regarded as one of the effective ways to passivate the underlying defects in perovskite solar cells (PSCs), little attention has been paid to how to select suitable passivation agents. Here, we report on the dependence of photovoltaic performance on acid dissociation constant (Ka) of passivation agents to …
Efficient and stable perovskite solar cells with regulated depletion ...
The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has developed rapidly over the past decade 1,2,3,4,5,6,7, with a certified efficiency of 26.1% obtained 8.Realizing long-term ...
Enhanced passivation durability in perovskite solar cells via ...
The main bottleneck in the commercialization of perovskite solar cells is the long-term stability of device operation. Sustainable passivation of defects from device operation is an important way to maintain performance over time. We heavily passivate the perovskite surface with a π-conjugated passivator, the passivation effectiveness of which is not …
Lewis bases: promising additives for enhanced performance of perovskite solar cells …
Such perovskite solar cells show extensive stability and PCE of 20.7% compared with 17.72% in reference solar cells. 3.5. Anti-solvent engineering/surface treatment of perovskite via Lewis acid-base effect
Room-temperature-processed perovskite solar cells surpassing …
Article Room-temperature-processed perovskite solar cells ...
Molecules | Free Full-Text | Defects and Defect Passivation in Perovskite Solar Cells …
Defects and Defect Passivation in Perovskite Solar Cells
Robust chelated lead octahedron surface for efficient and stable ...
5 · The unique crystal structure enabled perovskite solar cells (PSCs) to achieve a power conversion efficiency (PCE) of over 26% 5,6,7,8, approaching that of mainstream …
Perovskite solar cells with atomically coherent interlayers on …
Figure 1a depicts multilayered thin films of ETL (n), perovskite (i) and HTL (p), along with an interlayer formed by the reaction between the Cl-cPP solution and a Cl-bSO ETL. Energy levels based ...
Mobile iodides capture for highly photolysis
and reverse-bias-stable perovskite solar cells
The Synergistic Effect of Phosphonic and Carboxyl Acid Groups …
Reducing the interfacial defects between the perovskite/electron transport layer (ETL) is the key point to improving the efficient and stable performance of perovskite solar cells (PSCs). In this study, two self-assembled molecules ((aminomethyl)phosphonic acid and glycine) with different functional groups (phosphonic …
Acid molecule-assisted high-quality SnO2 transport layer for …
The SnO 2 electron transport layer (ETL) serves a critical role in perovskite solar cells. However, the oxygen vacancy defects and excess hydroxyl (–OH) …
Nickel Oxide for Perovskite Photovoltaic Cells
Organic–inorganic perovskite solar cells (PSCs) have shown tremendous progress from 3.8% power conversion efficiency (PCE) in 2003 to 25.2% in 2020 because of their wide range of light absorption, fast charge separation, long carrier diffusion length, and long carrier lifetime. ... followed by antisolvent treatment, has been widely used to ...
Low-loss contacts on textured substrates for inverted perovskite solar ...
Low-loss contacts on textured substrates for inverted ...
Polymer-acid-metal quasi-ohmic contact for stable perovskite …
We introduce a generic approach featuring a Lewis-acid layer sandwiched between dopant-free semicrystalline polymer and metal electrode in perovskite solar …
Recent Progress in Regulating Surface Potential for High …
The interface between perovskite and indium tin oxide (ITO) requires a potential well for improving the efficiency and stability of PSCs. The heterointerface between the top perovskite surface and a charge-transport layer (CTL) needs no charge accumulation for both the hole-transport layer (HTL) and the electron-transport layer …
Solution-processed amino acid modified SnO2 electron transport …
SnO 2 has gathered wide attention as an electron transport layer (ETL) in perovskite solar cells (PSCs) for its outstanding properties such as low-temperature process, high mobility, and matched energy level. However, the low-temperature annealing of SnO 2 may lead to the formation of large quantities of oxygen vacanices, which can …
Manipulating Ion Migration and Interfacial Carrier Dynamics via …
Instability caused by the migrating ions is one of the major obstacles toward the large-scale application of metal halide perovskite optoelectronics. Inactivating …
Reinforcing self-assembly of hole transport molecules for stable inverted perovskite solar cells …
One approach for improving the power conversion efficiencies (PCEs) of inverted perovskite solar cells (PSCs) has been to use self-assembled monolayers (SAMs), such as [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) and its derivatives, as hole transport materials (HTMs) (1, 2).).
Enhancing Hole Transport Uniformity for Efficient Inverted …
However, its uneven film generation and failure to effectively passivate the buried interface defects limit the device''s performance improvement potential. Herein, p …
Next-generation applications for integrated perovskite solar cells
Next-generation applications for integrated perovskite solar ...
Interfacial modification using the cross-linkable tannic acid for ...
Interfacial modification using the cross-linkable tannic acid for highly-efficient perovskite solar cells with excellent stability. Author links open overlay panel ... Post-treatment of perovskite films is a straightforward interfacial modification technique that has attracted wide attention recently, because of its potential to passivate ...
Improved performance and stability of perovskite solar cells by …
Improved performance and stability of perovskite solar cells ...
Double-side 2D/3D heterojunctions for inverted perovskite solar cells
Double-side 2D/3D heterojunctions for inverted perovskite ...
Advancements and Prospects in Perovskite Solar Cells: From …
Hybrid perovskites, materials composed of metals and organic substances in their structure, have emerged as potential materials for the new generation of photovoltaic cells due to a unique combination of optical, excitonic and electrical properties. Inspired by sensitization techniques on TiO2 substrates (DSSC), CH3NH3PbBr3 and CH3NH3PbI3 …