A Facile Microwave-Assisted Hydrothermal Synthesis of Graphene Quantum Dots for Organic Solar Cell Efficiency Improvement
Joint Authors
Tran, Quang Trung
Pham, Hoai Phuong
Thi Thu, Hoang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Carbon-based nanomaterials have successively remained at the forefront of different research fields and applications for years.
Understanding of low-dimension carbon material family (CNT, fullerenes, graphene, and graphene quantum dots) has arrived at a certain extension.
In this report, graphene quantum dots were synthesized from graphene oxide with a microwave-assisted hydrothermal method.
Compared with conventional time-consuming hydrothermal routes, this novel method requires a much shorter time, around ten minutes.
Successful formation of quantum dots derived from graphene sheets was verified with microscopic and spectroscopic characterization.
Nanoparticles present a diameter of about 2-8 nm, blue emission under ultraviolet excitation, and good dispersion in polar solvents and can be collected in powder form.
The synthesized graphene quantum dots were utilized as a hole transport layer in organic solar cells to enhance the cell quantum efficiency.
Such quantum dots possess energy levels (Ec and Ev) relevant to HOMO and LUMO levels of conductive polymers.
Mixing P3HT:PCBM polymer and graphene quantum dots of sufficient extent notably helps reduce potential difference at interfaces of the two materials.
Overall efficiency consequently advances to 1.43%, an increase of more than 44% compared with pristine cells (0.99%).
American Psychological Association (APA)
Thi Thu, Hoang& Pham, Hoai Phuong& Tran, Quang Trung. 2020. A Facile Microwave-Assisted Hydrothermal Synthesis of Graphene Quantum Dots for Organic Solar Cell Efficiency Improvement. Journal of Nanomaterials،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1188393
Modern Language Association (MLA)
Thi Thu, Hoang…[et al.]. A Facile Microwave-Assisted Hydrothermal Synthesis of Graphene Quantum Dots for Organic Solar Cell Efficiency Improvement. Journal of Nanomaterials No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1188393
American Medical Association (AMA)
Thi Thu, Hoang& Pham, Hoai Phuong& Tran, Quang Trung. A Facile Microwave-Assisted Hydrothermal Synthesis of Graphene Quantum Dots for Organic Solar Cell Efficiency Improvement. Journal of Nanomaterials. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1188393
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1188393