Graphene quantum dots doping SnO2 for improving carrier transport of perovskite solar cells

Lu, Chaoqun; Zhang, Weijia; Jiang, Zhaoyi; Ni, Cong

doi:10.1016/j.ceramint.2021.07.143

Cited by 13 publications

(11 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…QDs doping into ETL presented an effective method for optimizing ETM. Table 1 lists the details of the devices [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ].…”

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

“…However, the SnO 2 surface has defects when prepared by spin coating of the chosen SnO 2 hydrocolloid, which can cause the decay of the perovskite absorber layer and reduce the performance of the PSCs. For this reason, Lu et al [ 36 ] added GQDs as additives to SnO 2 hydrocolloids in 2021. They formed compact ETL by spinning.…”

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

“…( b , c ) Images of 0% GQDs- and 4.5% GQDs-modified perovskite films. Reproduced from [ 36 ], with permission from Elsevier, 2021. ( d ) Stored in ambient air with RH of 30~40% and ( e ) thermal stability of PSCs kept in ambient air at 80 °C in the dark.…”

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

“…QDs doping into ETL presented an effective method for optimizing ETM. Table 1 lists the details of the devices [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. Carbon is a popular building material due to its low price, high surface area and abundant resources [45].…”

Section: Quantum Dots As Additives In Electron Transport Layersmentioning

confidence: 99%

See 3 more Smart Citations

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

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.

show abstract

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

Section: Quantum Dots As Additives In Perovskite Solar Cellsmentioning

confidence: 99%

Section: Quantum Dots As Additives In Electron Transport Layersmentioning

confidence: 99%

See 2 more Smart Citations

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

“…This type of semiconductor has an ABX 3 structure, where A is methylammonium (MA), formamidinium, or cesium (Cs); B is Pb or Sn; and X can be replaced by I, Br, or Cl . Several approaches, such as compositional and interfacial engineering, − have been investigated to boost the performance of PSCs. , One of the most critical factors in enhancing the PCE of PSCs is controlling the perovskite layer morphology to deposit a pinhole-free, highly crystalline, and homogeneous larger grain-size film. − Since the perovskite layer grain boundaries are considered as the charge trapping sites and recombination centers, grain boundaries are reduced by having a larger perovskite grain diameter which enhances the charge carrier mobility and collection efficiency simultaneously . To date, various approaches, including changes in the annealing condition, solvent engineering during the fabrication process, and incorporation of additives such as carbon-based nanostructures, − chloride salt, ,, and polyvinylpyrrolidone, , have been applied for adjusting the crystalline structure and surface morphology of the perovskite layer, which translates to higher performance.…”

Section: Introductionmentioning

confidence: 99%

Crystallization Retardation and Synergistic Trap Passivation in Perovskite Solar Cells Incorporated with Magnesium-Decorated Graphene Quantum Dots

Kalanaki,

Abdi,

Rahsepar

2023

ACS Omega

View full text Add to dashboard Cite

One of the encouraging strategies for enhancing the efficiency of perovskite solar cells (PSCs) is to reduce defects, trap states of pinholes, and charge recombination rate in the light absorber layer of perovskite, which can be addressed by increasing the perovskite grain size. The utilization of Mg-decorated graphene quantum dots (MGQD) or graphene quantum dots (GQDs) into a perovskite precursor solution for further crystal modification is introduced in this study. Studies on the crystalline structure and morphology of MGQD generated from GQDs demonstrate that MGQD has a greater crystal size than GQD. Therefore, higher light absorption in the whole UV−vis spectrum and a larger grain size for the perovskite/MGQD layer compared to the perovskite/ GQD sample are achieved. Moreover, more photoluminescence peak quenching of perovskite/MGQD and extended carrier recombination lifetime (from 3 to 40 ns) verify the surface and grain boundary trap passivation compared to pristine perovskite. Consequently, PSCs in an n-i-p configuration containing perovskite/MGQD show a higher performance of 10.2% in comparison to the pristine perovskite at 7.2%, attributed to the enhanced J SC from 13.2 to 19.1 mA cm −2 . Thus, incorporating MGQDs into the perovskite layer is a hopeful approach for obtaining a superior perovskite film with impressive charge extraction and decreased nonradiative charge recombination.

show abstract

Applications of Carbon‐Based Materials for Improving the Performance and Stability of Perovskite Solar Cells

et al. 2023

View full text Add to dashboard Cite

Organic–inorganic hybrid perovskite solar cells (PSCs) attract many researchers in the field of photovoltaic because of their high‐power conversion efficiency and low‐cost manufacturing. However, improper interfacial charge transfer, perovskite degradation, and poor stability are major concerns for their commercialization and scale‐up. Significant efforts have been made in recent years mainly by employing different strategies such as optimizing fabrication, developing novel materials, use of additives, and an interfacial layer in PSCs. Nowadays, carbon materials are widely recognized as promising candidates for alternative usage in PSCs because of their cost effectiveness, high conductivity, appropriate work function (5.0 eV), and low‐temperature sintering process. In addition, the highly hydrophobic nature of the carbon‐based materials prevents moisture penetration into the perovskite layer, resulting in enhanced stability. This review shows how effectively carbon‐based materials can improve the performance of PSCs. First, the different carbon materials such as graphene and its derivatives, fullerenes and its derivatives, carbon quantum dots, and carbon nanotubes are described. Subsequently, the role of these carbon‐based materials employed in electron‐transport layers, hole‐transport layers, and perovskite layers in PSCs is discussed. Thus, this review highlights the recent advancements made in carbon‐based PSCs and their role in improving the performance of PSCs.

show abstract

Graphene quantum dots doping SnO2 for improving carrier transport of perovskite solar cells

Cited by 13 publications

References 36 publications

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

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

Crystallization Retardation and Synergistic Trap Passivation in Perovskite Solar Cells Incorporated with Magnesium-Decorated Graphene Quantum Dots

Applications of Carbon‐Based Materials for Improving the Performance and Stability of Perovskite Solar Cells

Contact Info

Product

Resources

About