Electronic transitions and excitations in solidC70studied by EELS and XPS C 1ssatellite structures

Abstract

Electronic-transitions and excitations in solid C-70 studied by EELS and XPS c-1s satellite structures Han, Bo-ying; Yu, Li-ming; Hevesi, K.; Gensterblum, G.; Rudolf, P.; Pireaux, J.-J.; Thiry, P.A.; Caudano, R.; Lambin, Ph.; Lucas, A.A. . (1995). Electronictransitions and excitations in solid C-70 studied by EELS and XPS c-1s satellite structures. Physical

Structural and electronic properties ofCe@C82

“…The value of E g is estimated to be 0.4 eV; this is smaller than those of C 60 ͑1.8 or 2.1 eV͒ and C 70 ͑2.2 eV͒. [32][33][34] The E g value of Ce@C 82 is slightly larger than those of La@C 82 and Dy@C 82 which are estimated from the temperature dependence of ͑Refs. 9 and 10͒ to be 0.3 and 0.2 eV, respectively, These results show that M @C 82 (M : La, Dy and Ce͒ is a semiconductor with a small value of E g .…”

Fabrication and characterization of field-effect transistor device with C2v isomer of Pr@C82

“…The high I B originates from the small mobility gap energy, E gM , of M@C 82 ; the E gM s of the C 2v isomer of Pr@C 82 and Dy@C 82 were estimated to be 0.29 and 0.20 eV, respectively, from the ρ -T plots [13,15]. Furthermore, the band gap energies, E gB s, of the C 2v isomer of Pr@C 82 and Dy@C 82 were determined to be 0.7 and 0.6 eV, respectively, from scanning tunneling spectroscopy [13,16], which were smaller than those of C 60 (1.8 -2.1 eV) and C 70 (2.2 eV) [17][18][19]. The T dependence of μ is shown in Fig.…”

Enhanced Photocurrent Spectral Response in Low‐Bandgap Polyfluorene and C70‐Derivative‐Based Solar Cells

“…However, the energy difference between Frenkel and CT excitons in C 60 is 0.5 eV, more than 10 times larger. [18,19] This comparison suggests that a C 70 -derivative may be a suitable candidate for solar cell fabrication. A bulk heterojunction photovoltaic cell in which an isomeric mixture of C 70 -derivative [6,6]-phenyl C 71 butyric acid methyl esters ([70]PCBM), was used as electron acceptor in combination with poly(2-methoxy-5-{3¢,7¢-dimethyloctyloxy}-pphenylene vinylene) (MDMO-PVV) has been reported.…”