Improved electron transport in MAPbI3 perovskite solar cells based on dual doping graphdiyne

Li, Jiang-Sheng; Jiu, Tonggang; Duan, Chenghao; Wang, Yao; Zhang, Hongna; Jian, Hongmei; Zhao, Yingjie; Wang, Ning; Huang, Changshui; Li, Yuliang

doi:10.1016/j.nanoen.2018.02.014

Cited by 139 publications

(83 citation statements)

References 42 publications

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“…The electron lifetime ( τ ) can be obtained by the following equation:

τ = 1 / 2 π f_{normalp}

where f p is the peak frequency corresponding to electrochemical reaction of charge‐transfer process at ZnO or GDZO interface. As a consequence, it can be derived that the values of τ for GDZO and ZnO based devices are 3.33 and 1.65 µs, respectively, which indicates a high electron density and rapid electron transfer occurring at GDZO interface …”

Section: Resultsmentioning

confidence: 99%

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

Jian

Chen

et al. 2018

Solar RRL

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Graphdiyne-ZnO (GDZO) composite material is prepared via a simple method and studied in detail for the first time. The transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses confirm the formation of an adduct between GD and ZnO. Then the interaction between ZnO and GD is further investigated by first-principles calculations. It is found that the Zn and O atom can coordinate bonding with GD, thus forming the C─Zn bond and C─O bond, respectively. Polymer solar cells are fabricated based on the nanocomposites for the first time and an enhanced power conversion efficiency of 11.2%, compared with the devices with ZnO-only (10%), is obtained. Simultaneously, the resultant devices show better stability, whether in glove box or in atmosphere, with humidity of 90%. The investigation of exciton generation rate, ideal current-voltage model, and impedance spectra verify that the introduction of GDZO not only accelerates electron transfer but also reduces charge recombination occurring at the interface. The results indicate that GDZO is a promising electron transport material to enhance solar cell performance and presents a large potential for optoelectronic applications as well.

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“…The electron lifetime ( τ ) can be obtained by the following equation:

τ = 1 / 2 π f_{normalp}

Section: Resultsmentioning

confidence: 99%

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

Jian

Chen

et al. 2018

Solar RRL

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“…Compared with the traditional carbon materials, graphdiyne (GDY) has numerous sp‐hybridized carbon atoms, which are unique and promising epicenters for electrochemical applications. Recently, this novel carbon allotrope has been applied in some key fundamental and applications research, such as catalysis, solar cells, and batteries . It has already demonstrated its great advantages in structural engineering for realizing the tunable electrochemical activities in interfacial modification .…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the adjustment in the electronic structure caused by N‐doping, the lithiophilicity of the carbon materials can be improved. The N atoms with well‐defined configurations can be readily and controllably introduced into the GDY nanosheets with a bottom‐up method, which cannot be realized in traditional carbon materials. When the sp‐carbon‐rich network of GDY is doped with N atoms, the electron‐rich donors can strongly absorb Lewis acidic Li ions, which thereby will further increase the epicenters for the Li nucleation process and is promising for preventing Li dendrites.…”

Section: Introductionmentioning

confidence: 99%

N‐Doped Graphdiyne Coating for Dendrite‐Free Lithium Metal Batteries

Shang

Wang

et al. 2020

Chemistry A European J

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Nonuniform nucleation is one of the major reasons for the dendric growth of metallicl ithium, whichl eads to intractable problems in the efficiency,r eversibility,a nd safety in Li-based batteries. To improve the deposition of metallic Li on Cu substrates, herein, af reestandingc urrent collector (NGDY@CuNW) is formed by coatingpyridinic nitrogen-doped graphdiyne (NGDY) nanofilms on 3D Cu nanowires (CuNWs). Theoretical predictions reveal that the introductiono fn itrogen atoms in the 2D GDY can enhance the binding energy between the Li atom and GDY,t herefore improving thel ithiophilicity on the surface for uniform lithium nucleation and deposition. Accordingly,the deposited metallic Li on the NGDY@CuNW electrode exhibitsadendrite-free morphology,r esultingi ns ignificant improvements in terms of the reversibility with ah igh coulombic efficiency (CE) and along lifespana thigh currentd ensity.Our research provides an efficient methodt oc ontrol the surfacep roperty of Cu, which also will be instructive for other metal batteries.Supporting information and the ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

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“…By comparison with the above two techniques, straightly imbedding inorganic dopants into the PCBM layer to form a hybrid ETL displays simpler and more effective, being advantageous to further improve the performance and stability of PSCs. However, the doping effect on the photovoltaic performance and the relevant doping mechanism are still unclear . Therefore, the introduction of new dopants as well as the understanding of doping mechanism is still a challenge for improving the performance of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Zn_0.8Cd_0.2S@PCBM Hybrid as an Efficient Electron Transport Layer for Air‐Processed p‐i‐n Planar Perovskite Solar Cells: Improvement of Interfacial Electron Transfer and Device Stability

2018

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In this study, an inorganic/organic hybrid, Zn0.8Cd0.2S nanoparticles (ZCS) embedded in [6,6]‐phenyl‐C61‐butyric acid methyl (PCBM), as an efficient electron transport layer (ETL) for air‐processed p‐i‐n perovskite solar cells (PSCs) has been demonstrated, and the doping effect and doping mechanism are systematically studied. As compared to PCBM, ZCS@PCBM ETL exhibits improved electron extraction at the perovskite/ETL interface, increased electron transportation within the ETL, enhanced charge collection efficiency, and suppressed interfacial charge recombination, resulting in significantly improved power conversion efficiency (PCE) from 14.41 to 17.18% by 19.2%. Interestingly, the ZCS nanoparticles can protect the perovskite layer from erosion by ambient moisture, and 82% of the initial PCE for the non‐encapsulated devices with ZCS@PCBM ETL is retained after 500 h storage in the atmosphere (humidity 30–60%) versus only 13% of the initial PCE for the PCBM ETL without ZCS doping.

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Improved electron transport in MAPbI3 perovskite solar cells based on dual doping graphdiyne

Cited by 139 publications

References 42 publications

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

N‐Doped Graphdiyne Coating for Dendrite‐Free Lithium Metal Batteries

Zn_0.8Cd_0.2S@PCBM Hybrid as an Efficient Electron Transport Layer for Air‐Processed p‐i‐n Planar Perovskite Solar Cells: Improvement of Interfacial Electron Transfer and Device Stability

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Improved electron transport in MAPbI3 perovskite solar cells based on dual doping graphdiyne

Cited by 139 publications

References 42 publications

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

Studies of Graphdiyne‐ZnO Nanocomposite Material and Application in Polymer Solar Cells

N‐Doped Graphdiyne Coating for Dendrite‐Free Lithium Metal Batteries

Zn0.8Cd0.2S@PCBM Hybrid as an Efficient Electron Transport Layer for Air‐Processed p‐i‐n Planar Perovskite Solar Cells: Improvement of Interfacial Electron Transfer and Device Stability

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Zn_0.8Cd_0.2S@PCBM Hybrid as an Efficient Electron Transport Layer for Air‐Processed p‐i‐n Planar Perovskite Solar Cells: Improvement of Interfacial Electron Transfer and Device Stability