Efficient bilayer polymer solar cells possessing planar mixed-heterojunction structures

Jen Hsien Huang, Kuang Chieh Li, Dhananjay Kekuda, Hari Hara Padhy, Hong Cheu Lin, Kuo Chuan Ho, Chih Wei Chu

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We have investigated the influence of thermal annealing on the performance of polymer bilayer solar cell devices incorporating poly{2,6-(4,4-bis[2- ethylhexyl]-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1, 3-benzothiadiazole)} (PCPDTTBT) as the donor and two kinds of fullerenes (C 60, C70) as acceptors. The higher absorption of C 70 increased the external quantum efficiency in the spectral range 400-600 nm. We observed morphological changes of the polymer films when the pre-annealing temperature was near the crystalline temperature (Tc, 207°C). These nanostructural transformations resulted in a modified interfacial morphology of the donor phases and, therefore, greatly influenced the device performance. Post-annealing treatment reorganized the interface between the donor and acceptor phases, leading to better contact. The highest power conversion efficiency (2.85%) was obtained when we performed device pre- and post-annealing both at 200°C for 30 min; the open-circuit voltage was 0.69 V and the short-circuit current was 8.42 mA cm-2.

Original languageEnglish
Pages (from-to)3295-3300
Number of pages6
JournalJournal of Materials Chemistry
Volume20
Issue number16
DOIs
Publication statusPublished - 09-04-2010

Fingerprint

Heterojunctions
Annealing
Fullerenes
Open circuit voltage
Quantum efficiency
Polymer films
Short circuit currents
Conversion efficiency
Solar cells
Polymers
Polymer solar cells
Crystalline materials
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Huang, Jen Hsien ; Li, Kuang Chieh ; Kekuda, Dhananjay ; Padhy, Hari Hara ; Lin, Hong Cheu ; Ho, Kuo Chuan ; Chu, Chih Wei. / Efficient bilayer polymer solar cells possessing planar mixed-heterojunction structures. In: Journal of Materials Chemistry. 2010 ; Vol. 20, No. 16. pp. 3295-3300.
@article{bb7cc72db797479ba71ef0468dcbcf92,
title = "Efficient bilayer polymer solar cells possessing planar mixed-heterojunction structures",
abstract = "We have investigated the influence of thermal annealing on the performance of polymer bilayer solar cell devices incorporating poly{2,6-(4,4-bis[2- ethylhexyl]-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1, 3-benzothiadiazole)} (PCPDTTBT) as the donor and two kinds of fullerenes (C 60, C70) as acceptors. The higher absorption of C 70 increased the external quantum efficiency in the spectral range 400-600 nm. We observed morphological changes of the polymer films when the pre-annealing temperature was near the crystalline temperature (Tc, 207°C). These nanostructural transformations resulted in a modified interfacial morphology of the donor phases and, therefore, greatly influenced the device performance. Post-annealing treatment reorganized the interface between the donor and acceptor phases, leading to better contact. The highest power conversion efficiency (2.85{\%}) was obtained when we performed device pre- and post-annealing both at 200°C for 30 min; the open-circuit voltage was 0.69 V and the short-circuit current was 8.42 mA cm-2.",
author = "Huang, {Jen Hsien} and Li, {Kuang Chieh} and Dhananjay Kekuda and Padhy, {Hari Hara} and Lin, {Hong Cheu} and Ho, {Kuo Chuan} and Chu, {Chih Wei}",
year = "2010",
month = "4",
day = "9",
doi = "10.1039/b924147g",
language = "English",
volume = "20",
pages = "3295--3300",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "Royal Society of Chemistry",
number = "16",

}

Efficient bilayer polymer solar cells possessing planar mixed-heterojunction structures. / Huang, Jen Hsien; Li, Kuang Chieh; Kekuda, Dhananjay; Padhy, Hari Hara; Lin, Hong Cheu; Ho, Kuo Chuan; Chu, Chih Wei.

In: Journal of Materials Chemistry, Vol. 20, No. 16, 09.04.2010, p. 3295-3300.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Efficient bilayer polymer solar cells possessing planar mixed-heterojunction structures

AU - Huang, Jen Hsien

AU - Li, Kuang Chieh

AU - Kekuda, Dhananjay

AU - Padhy, Hari Hara

AU - Lin, Hong Cheu

AU - Ho, Kuo Chuan

AU - Chu, Chih Wei

PY - 2010/4/9

Y1 - 2010/4/9

N2 - We have investigated the influence of thermal annealing on the performance of polymer bilayer solar cell devices incorporating poly{2,6-(4,4-bis[2- ethylhexyl]-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1, 3-benzothiadiazole)} (PCPDTTBT) as the donor and two kinds of fullerenes (C 60, C70) as acceptors. The higher absorption of C 70 increased the external quantum efficiency in the spectral range 400-600 nm. We observed morphological changes of the polymer films when the pre-annealing temperature was near the crystalline temperature (Tc, 207°C). These nanostructural transformations resulted in a modified interfacial morphology of the donor phases and, therefore, greatly influenced the device performance. Post-annealing treatment reorganized the interface between the donor and acceptor phases, leading to better contact. The highest power conversion efficiency (2.85%) was obtained when we performed device pre- and post-annealing both at 200°C for 30 min; the open-circuit voltage was 0.69 V and the short-circuit current was 8.42 mA cm-2.

AB - We have investigated the influence of thermal annealing on the performance of polymer bilayer solar cell devices incorporating poly{2,6-(4,4-bis[2- ethylhexyl]-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1, 3-benzothiadiazole)} (PCPDTTBT) as the donor and two kinds of fullerenes (C 60, C70) as acceptors. The higher absorption of C 70 increased the external quantum efficiency in the spectral range 400-600 nm. We observed morphological changes of the polymer films when the pre-annealing temperature was near the crystalline temperature (Tc, 207°C). These nanostructural transformations resulted in a modified interfacial morphology of the donor phases and, therefore, greatly influenced the device performance. Post-annealing treatment reorganized the interface between the donor and acceptor phases, leading to better contact. The highest power conversion efficiency (2.85%) was obtained when we performed device pre- and post-annealing both at 200°C for 30 min; the open-circuit voltage was 0.69 V and the short-circuit current was 8.42 mA cm-2.

UR - http://www.scopus.com/inward/record.url?scp=77950443688&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77950443688&partnerID=8YFLogxK

U2 - 10.1039/b924147g

DO - 10.1039/b924147g

M3 - Article

VL - 20

SP - 3295

EP - 3300

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 16

ER -