Title :
Enhancing morphology and charge extraction of low-bandgap bulk-hetrojunction on zno nanorod by ultrasonic treated hydrothermal growth
Author :
Lan, Shiang ; Lin, Shang-Hong ; Ku, Chun-Wei ; Kao, Chia-Yu ; Lin, Ching-Fuh
Author_Institution :
Grad. Inst. of Photonics & Optoelectron., Taiwan Univ., Taipei, Taiwan
Abstract :
Ultrasonic treatment is used to control the morphology of ZnO nanorod array grown by hydrothermal method, providing large-scale synthesis of uniform nanorod array and efficient exciton dissociation. The high quality of ZnO nanorod is critical for the performance of organic/inorganic hybrid solar cells based on a blend of the low-bandgap polymer:fullerene. As a result, the power conversion efficiency (PCE) was improved from 2.97 to 5.54 %, with a short-circuit current density (Jsc) of 15.11 mA/cm2, an open-circuit voltage (Voc) of 0.71 V, and a fill factor (FF) of 51.61% under 100mW/cm2 irradiation.
Keywords :
II-VI semiconductors; current density; energy gap; excitons; fullerenes; liquid phase deposition; nanofabrication; nanorods; organic-inorganic hybrid materials; polymer blends; semiconductor growth; semiconductor heterojunctions; short-circuit currents; solar cells; wide band gap semiconductors; zinc compounds; ZnO; exciton dissociation; fill factor; hydrothermal method; large-scale synthesis; low-bandgap bulk-hetrojunction charge extraction; low-bandgap polymer:fullerene; morphology control; open-circuit voltage; organic-inorganic hybrid solar cells; power conversion efficiency; short-circuit current density; ultrasonic treated hydrothermal growth; uniform nanorod array; Acoustics; Indium tin oxide; Optical device fabrication; Optical films; Optical sensors; RNA; Zinc oxide; PSCs; ZnO nanorod; inverted structure; low bandgap;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6322203
