172 0

Effect of a Co-evaporated Alq(3):Liq cathode buffer layer on the performance of a polymer photovoltaic cell

Title
Effect of a Co-evaporated Alq(3):Liq cathode buffer layer on the performance of a polymer photovoltaic cell
Author
박재근
Keywords
Polymer solar cell; Photovoltaic; Alq3; Liq; OPV
Issue Date
2015-06
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v. 66, NO 12, Page. 1872-1878
Abstract
The effect of co-evaporated tris(8-hydroxyquinolinato)aluminium:8-hydroxy-quinolinato lithium (Alq3:Liq) on the performance of a photovoltaic (PV) cell was investigated by characterizing the performance of a PV cell fabricated on poly (3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl- C61butyric-acidmethyl-ester (PCBM) bulk heterojunctions with Alq3:Liq as an exciton/holeblocking and electron-injection layer. Inserting Alq3:Liq layer into the PV cell strongly affected the power conversion efficiency (PCE) and fill factor (FF) of the PV cell; i.e., 1-nm-thick Alq3:Liq layer increased the PCE and the FF of the PV cell by 55.22 and 7.15%, respectively, compared with the cell without the Alq3:Liq layer. In particular, the PCE and the short circuit current density (J (SC) ) of the PV cell with an Alq3:Liq layer were 4.14 and 6.2% higher than those of a 2,9-dimethyl- 4,7-diphenyl-1, 10-phenanthroline (BCP)/LiF bi-layer cell, respectively, because the Liq deposited on Alq3 reduced the electron injection barrier between the workfunction of the aluminum electrode and the lowest unoccupied molecular orbital (LUMO) level of the organic material, resulting in the peak of the binding energy moving toward the high highest occupied molecular orbital (HOMO) level.
URI
http://link.springer.com/article/10.3938%2Fjkps.66.1872http://hdl.handle.net/20.500.11754/25027
ISSN
0374-4884; 1976-8524
DOI
10.3938/jkps.66.1872
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE