Eliminating Hysteresis of Perovskite Solar Cells with Hollow TiO2 Mesoporous Electron Transport Layer

Han, Wensheng; Wang, Yongling; Wan, Jiawei; Wang, Dan

doi:10.1007/s40242-022-1401-x

Cited by 16 publications

(8 citation statements)

References 39 publications

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“…Figure 4 shows how the high PCE of the PSC supports this trend when manufactured with different TiO2 QDs concentrations. Figures 4a and 4b show reduced PL intensity implying superior charge transfer in the 7.5% condition because peak intensity indicates electron recombination rate [23,24]. Similarly, Figures 4c and 4d demonstrated the best PCE performance in the 7.5% condition.…”

Section: Resultsmentioning

confidence: 87%

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Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Sintiam

Saranrom

Phadungdhitidhada

et al. 2023

J. Phys.: Conf. Ser.

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Perovskite solar cells (PSCs) have been at the center of attention for research and development of clean energy technology. The platform promises high performance with relatively cheap and low-temperature processing. The main hindrance of the platform is low stability and performance degradation due to humidity. Most defects and degradation often stem from interfaces between the perovskite layer (PSVK) and carrier transporting layer. This work aimed to solve such an issue by improving the interface between the Perovskite layer (PSVK) and electron transporting layer (ETL) made of titanium in the Perovskite solution. That is methylammonium formamidinium lead iodide (FA0.3MA0.7PbI3) PSCs using electrochemical grown TiO2 quantum dots (QDs) mixed in Titanium tetraisopropoxide (TTIP). TiO2 QDs have grown electrochemically in potassium chloride (KCl) solution and then mixed in TTIP with various concentrations (0%, 2.5%, 5.0%, 7.5%, and 10%). The photoconversion efficiency (PCE) of PSCs was improved to 14.05 % while 7.5% of TiO2 QDs passivation with the champion performance of 15.72% (a significant improvement from the 0% standard condition). The PSCs also lasted over 200 hours, demonstrating increased stability with the proposed recipe. This work demonstrated the successful delivery of alkaline passivation using TiO2 QDs as an agent for improving PSCs.

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Section: Resultsmentioning

confidence: 87%

“…Figure 4f summarizes the results of champion perovskite solar cells prepared for all conditions and with all parameters measured by the Oscilla program. The Hysteresis index (HI) was calculated using the same method previously used [24].…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Sintiam

Saranrom

Phadungdhitidhada

et al. 2023

J. Phys.: Conf. Ser.

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“…179 By considering the relationship between the periodic structure in HoMS and chemical reaction, Wang's group provided a new synthetic methodology named the sequential templating approach (STA), rapidly recognized as a universal method 180 Later, the unique property of temporal-spatial ordering 181 and the physical essence of STA, i.e., the representation of concentration waves, were revealed. 182 The unique structure of HoMS has demonstrated the advantages of abundant exposure of efficient surface and optimized mass transport, which can achieve the highefficiency energy utilization [183][184][185][186] Herein, introducing suitable photovapor generation materials with UES would enhance the kinetics and thermodynamics for U adsorption simultaneously.…”

Section: Temperaturementioning

confidence: 99%

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Shabbir,

Yang,

Wang

2024

Nanoscale

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“…[18] In catalytic reactions, the hollow and porous structures of supports play a key role in the exposure of active sites and mass transfer of reactant/product. [19][20][21] Therefore, the modulation and study of carbon supports for SACs should not be overlooked. ZIF-8 is the most commonly used precursor of carbonaceous support for SACs because of its unique topology and versatility of different metal centers.…”

Section: Introductionmentioning

confidence: 99%

Oxalate‐Assisted Synthesis of Hollow Carbon Nanocage With Fe Single Atoms for Electrochemical CO₂ Reduction

Sun

Cheong

et al. 2023

Small

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Metal single‐atom catalysts are promising in electrochemical CO2 reduction reaction (CO2RR). The pores and cavities of the supports can promote the exposure of active sites and mass transfer of reactants, hence improve their performance. Here, iron oxalate is added to ZIF‐8 and subsequently form hollow carbon nanocages during calcination. The formation mechanism of the hollow structure is studied in depth by controlling variables during synthesis. Kirkendall effect is the main reason for the formation of hollow porous carbon nanocages. The hollow porous carbon nanocages with Fe single atoms exhibit better CO2RR activity and CO selectivity. The diffusion of CO2 facilitated by the mesoporous structure of carbon nanocage results in their superior activity and selectivity. This work has raised an effective strategy for the synthesis of hollow carbon nanomaterials, and provides a feasible pathway for the rational design of electrocatalysts for small molecule activation.

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Eliminating Hysteresis of Perovskite Solar Cells with Hollow TiO2 Mesoporous Electron Transport Layer

Cited by 16 publications

References 39 publications

Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Oxalate‐Assisted Synthesis of Hollow Carbon Nanocage With Fe Single Atoms for Electrochemical CO₂ Reduction

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Eliminating Hysteresis of Perovskite Solar Cells with Hollow TiO2 Mesoporous Electron Transport Layer

Cited by 16 publications

References 39 publications

Enhancement of Perovskite solar cells performance using electrochemically grown TiO2 quantum dots

Enhancement of Perovskite solar cells performance using electrochemically grown TiO2 quantum dots

Enhanced uranium extraction from seawater: from the viewpoint of kinetics and thermodynamics

Oxalate‐Assisted Synthesis of Hollow Carbon Nanocage With Fe Single Atoms for Electrochemical CO2 Reduction

Contact Info

Product

Resources

About

Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Enhancement of Perovskite solar cells performance using electrochemically grown TiO₂ quantum dots

Oxalate‐Assisted Synthesis of Hollow Carbon Nanocage With Fe Single Atoms for Electrochemical CO₂ Reduction