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Kumar A, Sayyed MI, Punina D, Naranjo E, Jácome E, Abdulameer MK, Albazoni HJ, Shariatinia Z. Graphene quantum dots (GQD) and edge-functionalized GQDs as hole transport materials in perovskite solar cells for producing renewable energy: a DFT and TD-DFT study. RSC Adv 2023; 13:29163-29173. [PMID: 37800128 PMCID: PMC10549873 DOI: 10.1039/d3ra05438a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/27/2023] [Indexed: 10/07/2023] Open
Abstract
This study investigated the potential suitability of graphene quantum dots (GQD) and certain edge-functionalized GQDs (GQD-3Xs) as hole transport materials (HTMs) in perovskite solar cells (PSCs). The criteria for appropriate HTMs were evaluated, including solubility, hole mobility, light harvesting efficiency (LHE), exciton binding energy (Eb), hole reorganization energy (λh), hole mobility, and HTM performance. It was found that several of the compounds had higher hole mobility than Spiro-OMeTAD, a commonly used HTM in PSCs. The open circuit voltage and fill factor of the suitable GQD and GQD-3Xs were found to be within appropriate ranges for HTM performance in MAPbI3 PSCs. GQD-COOH and GQD-COOCH3 were identified as the most suitable HTMs due to their high solubility, small λh, and appropriate performance.
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Affiliation(s)
- Anjan Kumar
- Department of Electronics and Communication Engineering, GLA University Mathura-281406 India
| | - M I Sayyed
- Department of Physics, Faculty of Science, Isra University Amman 11622 Jordan
- Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman bin Faisal University (IAU) PO Box 1982 Dammam 31441 Saudi Arabia
| | - Diego Punina
- Facultad de Ciencias de la Ingeniería, Carrera Ingeniería Mecánica, Universidad Técnica Estatal de Quevedo (UTEQ) Quevedo Ecuador
| | - Eugenia Naranjo
- Facultad Mecánica, Escuela Superior Politécnica de Chimborazo (ESPOCH) Riobamba 060155 Ecuador
| | - Edwin Jácome
- Facultad de Mecánica, Escuela Superior Politécnica de Chimborazo (ESPOCH) Riobamba 060155 Ecuador
| | | | | | - Zahra Shariatinia
- Department of Chemistry, Tehran Polytechnic, Amirkabir University of Technology P.O. Box: 15875-4413 Tehran Iran
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Thakur A, Maitra S, Sinha RK, Devi P. Plasmonic Copper-activated ZnO Microarrays for Efficient Photoelectrocatalytic Applications. Chem Asian J 2023; 18:e202201155. [PMID: 36519348 DOI: 10.1002/asia.202201155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/15/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022]
Abstract
In the present work, green synthesized plasmonic copper nanostructures derived from carbon quantum dots (PCQDs) activated ZnO microarrays (MAs) based catalyst system is developed and studied for photocatalytic activity and photoelectrocatalytic water splitting. CQDs are synthesized from pharmaceutical waste and used as a reducing agent to synthesize PCQDs of an average size of 10±2 nm. PCQDs decorated ZnO (PCQDs/ZnO) MAs exhibited enhanced photocurrent density of ∼7.1 mA/cm2 at 1.23 V (vs. RHE), which is ∼11 fold to ZnO MAs alone (0.65 mA/cm2 ). The catalyst exhibits an ABPE of 1.07% at 0.7 V (vs. RHE), IPEC of 8.8% for 450 nm, and hydrogen production rate of 435 μmol/h. The enhanced PEC characteristics are assigned to the improved photons collection and better charge transfer for their participation in oxidation/reduction reaction. The same is well supported with DFT studies for the PCQDs/ZnO MAs catalyst for the first time.
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Affiliation(s)
- Anupma Thakur
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India.,CSIR-Central Scientific Instruments Organization, Sector-30C, 160030, Chandigarh, India
| | - Soumyajit Maitra
- CSIR-Central Scientific Instruments Organization, Sector-30C, 160030, Chandigarh, India
| | - R K Sinha
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India.,CSIR-Central Scientific Instruments Organization, Sector-30C, 160030, Chandigarh, India
| | - Pooja Devi
- Academy of Scientific and Innovative Research (AcSIR), 201002, Ghaziabad, India.,CSIR-Central Scientific Instruments Organization, Sector-30C, 160030, Chandigarh, India
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Zhou Y, Yang J, Luo X, Li Y, Qiu Q, Xie T. Selection, Preparation and Application of Quantum Dots in Perovskite Solar Cells. Int J Mol Sci 2022; 23:9482. [PMID: 36012746 PMCID: PMC9409050 DOI: 10.3390/ijms23169482] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/13/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
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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Affiliation(s)
- Yankai Zhou
- Engineering Research Center for Hydrogen Energy Materials and Devices, College of Rare Earths, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
| | - Jiayan Yang
- Engineering Research Center for Hydrogen Energy Materials and Devices, College of Rare Earths, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
| | - Xingrui Luo
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
| | - Yingying Li
- Engineering Research Center for Hydrogen Energy Materials and Devices, College of Rare Earths, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
| | - Qingqing Qiu
- Engineering Research Center for Hydrogen Energy Materials and Devices, College of Rare Earths, Jiangxi University of Science and Technology, 86 Hong Qi Road, Ganzhou 341000, China
| | - Tengfeng Xie
- College of Chemistry, Jilin University, Changchun 130012, China
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Peng H, Li L, Wang Q, Zhang Y, Wang T, Zheng B, Zhou H. Organic carbon dot coating for superhydrophobic aluminum alloy surfaces. JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH 2021; 18:861-869. [PMID: 33589866 PMCID: PMC7875562 DOI: 10.1007/s11998-020-00449-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/21/2020] [Accepted: 11/30/2020] [Indexed: 06/14/2023]
Abstract
A novel fluorine-free and silicon-free superhydrophobic aluminum alloy (treated-Al) is fabricated by chemical etching using hydrochloric acid and hydrogen peroxide and modified with an organic carbon dot (OCD) coating. The water contact angle (CA) of the treated-Al surface increases with the OCD concentration. When etched aluminum (etched-Al) is modified with 0.5 mg/ml OCDs, a CA of 161.4° is achieved, which indicates good nonwettability. SEM results verify that porous microstructures with cavities are uniformly distributed on the surface of etched-Al, in contrast to the bare aluminum alloy, which forms a primary rough structure. After treatment with 0.5 mg/ml OCDs, a nanoparticle coating is dispersed on the rough structures of treated-Al-0.5, which can trap air and make a water droplet essentially rest on a layer of air. The treated-Al-0.5 material has good self-cleaning properties and can sweep away contaminants at both 20 and 0°C. The Ecorr and Icorr of treated-Al-0.5 are - 0.56 V and 2.82 × 10-6 A/cm2, respectively, which shows good anticorrosion performance.
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Affiliation(s)
- Huaqiao Peng
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
| | - Lin Li
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
| | - Qiang Wang
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
| | - Yabo Zhang
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
| | - Tianming Wang
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
| | | | - Hong Zhou
- The Second Research Institute of Civil Aviation Administration of China, Chengdu, 610041 China
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Wang Y, Long R. Unravelling the Effects of Pressure-Induced Suppressed Electron-Hole Recombination in CsPbBr 3 Perovskite: Time-Domain ab Initio Analysis. J Phys Chem Lett 2019; 10:4354-4361. [PMID: 31317740 DOI: 10.1021/acs.jpclett.9b01678] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using nonadiabatic (NA) molecular dynamics simulations, we demonstrate pressure-dependent electron-hole recombination in all-inorganic CsPbBr3 perovskite. In particular, electron-hole recombination under 1 atm takes place in several hundred picoseconds, agreeing well with experiments. An increase of pressure causes PbBr6 octahedron distortion, including contraction of both Pb-Br-Pb angles and Pb-Br bond lengths, leading to a decrease in decoherence time and NA coupling and thus slowing electron-hole recombination. When the pressure reaches a critical pressure of 1.20 GPa, a phase transition occurs in which the charge carrier lifetime is longest and extends to several nanoseconds. When the pressure is increased over the threshold, the shrinkage of Pb-Br bond length is inhibited and the contraction of Pb-Br-Pb angles primarily induced the PbBr6 octahedron distortion. Such a situation gives rise to a mild NA coupling and decoherence time, restoring the recombination time to over half of a nanosecond. Our study uncovers the mechanisms for the pressure-suppressed charge recombination and provides an advanced route toward further development of photovoltaic performance of perovskite materials.
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Affiliation(s)
- Yutong Wang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P.R. China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education , Beijing Normal University , Beijing , 100875 , P.R. China
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