Title :
Quantum dot functionalized ZnO nanowire/P3HT hybrid photovoltaic devices
Author :
Harris, Nicholas ; Brewer, Joseph ; Shen, Gang ; Wilbert, David S. ; Butler, Lee ; Dawahre, Nabil ; Baughman, William ; Balci, Soner ; Rivera, Elmer ; Kung, Patrick ; Kim, Seongsin M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL, USA
Abstract :
We report hybrid inorganic/organic photovoltaic heterojunction structures based on quantum dot functionalized nanowires. Single crystalline ZnO nanowires were first functionalized with InP/ZnS core-shell quantum dots and then embedded in a conductive polymer hole matrix to achieve a low cost, high efficiency device structure. The device structures were characterized by scanning electron microscopy, transmission electron microscopy, confocal Raman and photoluminescence spectroscopy. The obtained results show excellent interface properties between the QDs and the ZnO nanowires, a high degree of polymer infiltration into the nanowire array and improved planarization of the polymer matrix.
Keywords :
II-VI semiconductors; Raman spectroscopy; nanowires; photoluminescence; photovoltaic cells; quantum dots; scanning electron microscopy; transmission electron microscopy; zinc compounds; ZnO; conductive polymer hole matrix; confocal Raman spectroscopy; core-shell quantum dots; hybrid photovoltaic devices; nanowire array; photoluminescence spectroscopy; photovoltaic heterojunction structures; polymer infiltration; quantum dot functionalized nanowire; scanning electron microscopy; single crystalline nanowires; transmission electron microscopy; Arrays; Indium phosphide; Nanoscale devices; Photovoltaic systems; Quantum dots; Scanning electron microscopy; Zinc oxide;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144479
