TY - JOUR
T1 - Raman study on pentacene:C60 bulk heterojunction films
AU - Iwasawa, Yasuhiro
AU - Sasaki, Tomoya
AU - Shibata, Takanori
AU - Furukawa, Yukio
N1 - Funding Information:
Y.I. acknowledges the Leading Graduate Program in Science and Engineering, Waseda University from MEXT, Japan. This work was financially supported in part by a Grant-in-Aid for challenging Exploratory Research (No. 26620208) from MEXT, Japan.
Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - We measured 785 nm excited Raman and infrared spectra of pentacene-d14. The observed spectra were assigned on the basis of the Raman and infrared spectra calculated by the density functional theory (DFT) method at the B3LYP/6-311 + G∗∗level. We measured 785 nm excited Raman spectrum of a pentacne-d14:C60 bulk heterojunction film. The spectrum was assigned on the basis of the wavenumber shifts upon deuteration of pentacene. The assignments of the 1462 and 493 cm-1 Ag bands of C60 were confirmed. The 511, 453, and 256 cm-1 bands, which were observed only in pentacene:C60 bulk heterojunction films, did not show large deuteration shifts. This result indicates that the 511, 453, and 256 cm-1 bands are attributed to activation of the silent modes of C60 due to symmetry lowering.
AB - We measured 785 nm excited Raman and infrared spectra of pentacene-d14. The observed spectra were assigned on the basis of the Raman and infrared spectra calculated by the density functional theory (DFT) method at the B3LYP/6-311 + G∗∗level. We measured 785 nm excited Raman spectrum of a pentacne-d14:C60 bulk heterojunction film. The spectrum was assigned on the basis of the wavenumber shifts upon deuteration of pentacene. The assignments of the 1462 and 493 cm-1 Ag bands of C60 were confirmed. The 511, 453, and 256 cm-1 bands, which were observed only in pentacene:C60 bulk heterojunction films, did not show large deuteration shifts. This result indicates that the 511, 453, and 256 cm-1 bands are attributed to activation of the silent modes of C60 due to symmetry lowering.
KW - Bulk heterojunction
KW - C
KW - Organic photovoltaic cells
KW - Pentacene-d
KW - Raman spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84962019341&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962019341&partnerID=8YFLogxK
U2 - 10.1016/j.vibspec.2016.03.012
DO - 10.1016/j.vibspec.2016.03.012
M3 - Article
AN - SCOPUS:84962019341
SN - 0924-2031
VL - 84
SP - 133
EP - 138
JO - Vibrational Spectroscopy
JF - Vibrational Spectroscopy
ER -
