Improvement of Conversion Efficiency of Inverted Organic Photovoltaic With PEDOT: PSS:WOx by Thermal Annealing

Author

Hyeong Pil Kim ; Seung Joo Lee ; Bin Mohd Yusoff, Abd Rashid ; Jin Jang

Author_Institution

Kyung Hee Univ., Seoul, South Korea

Volume

5

Issue

3

fYear

2015

fDate

May-15

Firstpage

897

Lastpage

902

Abstract

We report the effects of postannealing on the photovoltaic performance of ITO/LZO/P3HT:ICBA/PEDOT:PSS: WO_x/Al. The electrical characteristics of the PEDOT:PSS:WO_x film can be controlled through an annealing treatment, which exhibits a short-circuit current density of 9.37 mA/cm², an open-circuit voltage of 0.86V, and a power conversion efficiency of 5.54% under AM1.5 illumination (100 mW/cm²). By annealing the device at 150°C, a favorable phase separation in the PEDOT:PSS:WO_x is obtained, and the PCE increases by 23.27% compared with that of the nonannealed device. The V_oc increases with the annealing temperature, and it is worth noting that the PEDOT:PSS device only experienced a 2.40% decrease in PCE after 150°C annealing treatment.

Keywords

aluminium; annealing; current density; indium compounds; lanthanum compounds; organic compounds; phase separation; polymer films; short-circuit currents; solar cells; thin film devices; tungsten compounds; ITO-La₂Zr₂O₇-WO_x-Al; annealing temperature; electrical characteristics; inverted organic photovoltaic performance; open-circuit voltage; phase separation; postannealing; power conversion efficiency; short-circuit current density; thermal annealing; Annealing; Indium tin oxide; Performance evaluation; Photovoltaic cells; Photovoltaic systems; Plastics; Metal oxide; PEDOT:PSS; organic photovoltaic (OPV); thermal annealing;

fLanguage

English

Journal_Title

Photovoltaics, IEEE Journal of

Publisher

ieee

ISSN

2156-3381

Type

jour

DOI

10.1109/JPHOTOV.2015.2405754

Filename

7072469