Novel ethanol vapor annealing treatment of SnO2 quantum dots film for highly efficient planar heterojunction perovskite solar cells

Wang, Enqi; Chen, Peng; Yin, Xingtian; Wu, Yifeng; Que, Wenxiu

doi:10.1016/j.orgel.2020.105751

Cited by 9 publications

(12 citation statements)

References 31 publications

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“…Metal oxide QDs are used by researchers as ETM for PSCs now, offering superior properties compared to current metal oxide materials. Table 4 lists the details of the devices [ 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 ].…”

Section: Quantum Dots As Electron Transport Materialsmentioning

confidence: 99%

“…Although these methods have been successful in improving the quality of the film, they increase the cost of fabrication and the complexity of the process, which is not conducive to the commercialization of PSCs. To solve this problem, in 2020, Wang et al [ 98 ] first used ethanol to vapor-treat SnO 2 QDs during annealing, which eliminated defects on the surface of the films and led to a significant increase in the charge transport rate of the film. The final PSC showed a much higher PCE of 17.66% ( Figure 8 d).…”

Section: Quantum Dots As Electron Transport Materialsmentioning

confidence: 99%

“…( d ) V oc , FF and PCE of optimal device treated with ethanol vapor. Reproduced from [ 98 ], with permission from Elsevier, 2020.…”

Section: Quantum Dots As Electron Transport Materialsmentioning

confidence: 99%

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Selection, Preparation and Application of Quantum Dots in Perovskite Solar Cells

Zhou

Yang

Luo

et al. 2022

IJMS

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As the third generation of new thin-film solar cells, perovskite solar cells (PSCs) have attracted much attention for their excellent photovoltaic performance. Today, PSCs have reported the highest photovoltaic conversion efficiency (PCE) of 25.5%, which is an encouraging value, very close to the highest PCE of the most widely used silicon-based solar cells. However, scholars have found that PSCs have problems of being easily decomposed under ultraviolet (UV) light, poor stability, energy level mismatch and severe hysteresis, which greatly limit their industrialization. As unique materials, quantum dots (QDs) have many excellent properties and have been widely used in PSCs to address the issues mentioned above. In this article, we describe the application of various QDs as additives in different layers of PSCs, as luminescent down-shifting materials, and directly as electron transport layers (ETL), light-absorbing layers and hole transport layers (HTL). The addition of QDs optimizes the energy level arrangement within the device, expands the range of light utilization, passivates defects on the surface of the perovskite film and promotes electron and hole transport, resulting in significant improvements in both PCE and stability. We summarize in detail the role of QDs in PSCs, analyze the perspective and associated issues of QDs in PSCs, and finally offer our insights into the future direction of development.

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Section: Quantum Dots As Electron Transport Materialsmentioning

confidence: 99%

Section: Quantum Dots As Electron Transport Materialsmentioning

confidence: 99%

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Selection, Preparation and Application of Quantum Dots in Perovskite Solar Cells

Zhou

Yang

Luo

et al. 2022

IJMS

View full text Add to dashboard Cite

show abstract

“…Despite their many advantages, PSCs suffer from the inability to deposit perovskite films over large areas [10][11][12], poor stability [13][14][15][16][17], the tendency of perovskite to undergo phase changes [18][19][20], and severe hysteresis in formal structures [21][22][23], which are key issues that severely limit the industrial application of PSCs. As a consequence, researchers have been searching for some time for ways to optimize PSCs with strategies such as interfacial modifications [24][25][26][27], elemental doping [28][29][30][31], material substitution [32][33][34][35][36], etc. QDs are popular materials today and are favored by researchers due to their properties such as quantum size effect and surface effect [37,38].…”

Section: Introductionmentioning

confidence: 99%

“…As a result, they are widely used in PSCs because of their tunable energy bands and ease of preparation. Examples include TiO 2 QDs, ZnO QDs, and SnO 2 QDs [32,35,67,68], which are non-toxic, cost-effective, and have high charge mobility. PbS QDs have a large exciton Bohr radii, and they are able to absorb near-infrared light, enhancing the PCE of PSCs.…”

Section: Introduction Of Qdsmentioning

confidence: 99%

Application of Quantum Dot Interface Modification Layer in Perovskite Solar Cells: Progress and Perspectives

et al. 2022

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Perovskite solar cells (PSCs) are currently attracting a great deal of attention for their excellent photovoltaic properties, with a maximum photoelectric conversion efficiency (PCE) of 25.5%, comparable to that of silicon-based solar cells. However, PSCs suffer from energy level mismatch, a large number of defects in perovskite films, and easy decomposition under ultraviolet (UV) light, which greatly limit the industrial application of PSCs. Currently, quantum dot (QD) materials are widely used in PSCs due to their properties, such as quantum size effect and multi-exciton effect. In this review, we detail the application of QDs as an interfacial layer to PSCs to optimize the energy level alignment between two adjacent layers, facilitate charge and hole transport, and also effectively assist in the crystallization of perovskite films and passivate defects on the film surface.

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Recent Advances on Nanocrystals Embedding for High Performance Perovskite Solar Cells

Guo

Wang

et al. 2022

Adv Funct Materials

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Interfacial loss arising from defect trapping, contact barrier, and energy level alignment in the emerged perovskite solar cells (PSCs), is one of the most important issues to address for both improved photoconversion efficiency and long-term operational stability. The recent endeavors on the interfacial embedding of nanocrystals (NCs) in desired locations of PSCs have shown great success in terms of eliminating the interfacial loss in PSCs, while there is a lack of review to summarize the advances of NCs embedding for improved carrier dynamics and inhibited environmental degradation. Present study systematically analyzes the recent achievements on the embedding of a series of NCs including carbon dots, perovskite NCs, II-VI semiconductor NCs, metal/alloy NCs, which are intentionally introduced in desired layers/ interfaces of PSCs. The specific functionality of the NCs embedding including carrier dynamic modulation, crystallinity enhancement, defect passivation, light trapping, and stability enhancement are sorted out, according to the requirement of each layer in PSCs. Finally, the current challenges and future perspectives of NCs embedding for perovskite-based optoelectronic devices is outlook. The present study provides a guide for developing NCs-based additives for high-performance PSCs is believed.

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Novel ethanol vapor annealing treatment of SnO2 quantum dots film for highly efficient planar heterojunction perovskite solar cells

Cited by 9 publications

References 31 publications

Selection, Preparation and Application of Quantum Dots in Perovskite Solar Cells

Selection, Preparation and Application of Quantum Dots in Perovskite Solar Cells

Application of Quantum Dot Interface Modification Layer in Perovskite Solar Cells: Progress and Perspectives

Recent Advances on Nanocrystals Embedding for High Performance Perovskite Solar Cells

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