Open AccessThe research and fabrication of graphene quantum dots applied as the hole transporting layer in polymer solar cells
Author(s) -
Thu Thi Hoang,
Hoa Huynh,
Phuong Hoai Pham,
Hung Hoang Nguyen,
Giang Thuy Thanh Le,
Trung Quang Tran
Publication year - 2019
Publication title -
khoa học và công nghệ: tự nhiên
Language(s) - English
Resource type - Journals
ISSN - 2588-106X
DOI - 10.32508/stdjns.v2i5.786
Subject(s) - graphene , quantum dot , materials science , fabrication , polymer , graphene quantum dot , solar cell , nanotechnology , quantum dot solar cell , layer (electronics) , optoelectronics , polymer solar cell , conductive polymer , composite material , medicine , alternative medicine , pathology
In this report, we studied and fabricated graphene quantum dots by improved the Hummer method using NH3 reducing agent. The diameter of graphene quantum dots was approximately 6 nm, applied as the hole transport layer in organic solar cell to improve the quantum efficiency of solar cells. GQDs were very friendly with environment, made at low temperatures and might be dried into powder form and dissolved well in polar solvents. Graphene quantum dots with a 0D structure had the workfunction suistable for the conductive polymer which increased the short current (from 2.41 mA/cm2 to 4.38 mA/cm2) of polymer solar cells. They improved the performance significantly compared to conventional solar cells.