TY - JOUR
T1 - Experimental and theoretical demonstrations of ultraviolet absorption enhancement in porous nano-membrane graphene
AU - Kasry, Amal
AU - Fadlallah, Mohamed M.
AU - Voelcker, Nicolas H.
AU - Maarouf, Ahmed A.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Ultraviolet absorbing materials have important applications in which graphene is a strong candidate, yet, few efforts are being exerted to improve its absorption in the UV-region. We show that UV absorption in single-layer graphene can be enhanced by manoeuvring its electronic properties through converting it to a nanomembrane-like structure, or nanomesh. Regular and irregular pores were created by Electron Beam Lithography and a lithography-free process respectively. Theoretical calculations, using density functional theory, confirmed the experimental results, and indicated that the absorption peaks are a result of changes in the band structures of the nanomembrane graphene (NMGs) arising from the pore superlattice.
AB - Ultraviolet absorbing materials have important applications in which graphene is a strong candidate, yet, few efforts are being exerted to improve its absorption in the UV-region. We show that UV absorption in single-layer graphene can be enhanced by manoeuvring its electronic properties through converting it to a nanomembrane-like structure, or nanomesh. Regular and irregular pores were created by Electron Beam Lithography and a lithography-free process respectively. Theoretical calculations, using density functional theory, confirmed the experimental results, and indicated that the absorption peaks are a result of changes in the band structures of the nanomembrane graphene (NMGs) arising from the pore superlattice.
KW - First principles calculations
KW - Nanomembrane graphene
KW - Nanomesh
KW - UV absorption
UR - http://www.scopus.com/inward/record.url?scp=85070973381&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2019.08.038
DO - 10.1016/j.carbon.2019.08.038
M3 - Article
AN - SCOPUS:85070973381
SN - 0008-6223
VL - 155
SP - 65
EP - 70
JO - Carbon
JF - Carbon
ER -