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Bilayer polymer solar cells prepared with transfer printing of active layers from controlled swelling/de-swelling of PDMS

Authors :
Chih-Wei Chu
Yu-Jung Lu
Syed Ali Abbas
Nahid Kaisar
Anisha Mohapatra
Karunakara Moorthy Boopathi
Anupriya Singh
Chintam Hanmandlu
Chih-Hao Lee
Source :
Nano Energy. 63:103826
Publication Year :
2019
Publisher :
Elsevier BV, 2019.

Abstract

Herein, we demonstrate a facile method for transferring thin films to achieve polymer solar cells having stacked structures. By controlling the swelling/de-swelling properties of Polydimethylsiloxane (PDMS) via solvent treatment, we formed uniform organic films upon the PDMS surface and then transferred them to target substrates. We prepared bilayer and graded bilayer structures after transferring indene-C60 bis-adduct (ICBA) and ratio-controlled poly(3-hexylthiophene) (P3HT:ICBA) blends, respectively, onto the P3HT layer. The optimal graded bilayer solar cell exhibited a power conversion efficiency (PCE) of 5.13% an impressive value compared with that obtained for the corresponding bilayer cell (3.67%). We attribute this enhancement in PCE to the greater number of junction interfaces and the balanced carrier transfer properties. This residue-free and place-lift-off transferring method appears to have great promise in the solution processing of multilayer stacked thin film optoelectronics.

Details

ISSN :
22112855
Volume :
63
Database :
OpenAIRE
Journal :
Nano Energy
Accession number :
edsair.doi...........2f460afb7c6fa582c7cc45b752172d7b
Full Text :
https://doi.org/10.1016/j.nanoen.2019.06.022