We investigate the effect of thermal annealing on the optical, morphological and photovoltaic (PV) properties of bulk heterojunction (BHJ) solar cell based on the poly[2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-C12) and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM). The ITO/PEDOT:PSS/PBTTT-C12:PC71BM/Al devices were fabricated on glass substrates from the PBTTT-C12:PC71BM (1:4) solution in dichlorobenzene. Atomic force microscopy (AFM) is used to investigate the surface morphology of the PBTTT-C12:PC71BM thin films. The AFM results show that the thin film’s surface roughness decreases with increasing annealing temperature, making the annealed films smoother as compared to the nonannealed sample. The efficiency of the ITO/PEDOT:PSS/PBTTT-C12:PC71BM/Al PV devices increased from 1.85% to 2.48% with an increase in temperature from 0 °C to 150 °C.
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June 2015
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Thermal Annealing Effect on the Optical, Electrical and Morphological Properties of the PBTTT-C12:PC71BM Blend Films
Karwan Wasman Qadir,
Karwan Wasman Qadir
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
;Department of Physics,
College of Education,
Erbil 44001, Kurdistan Region,
College of Education,
Salahaddin University—Hawler
,Erbil 44001, Kurdistan Region,
Iraq
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Zubair Ahmad,
Zubair Ahmad
1
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
e-mail: zubairtarar@um.edu.my
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
e-mail: zubairtarar@um.edu.my
1Corresponding author.
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Khaulah Sulaiman
Khaulah Sulaiman
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
Search for other works by this author on:
Karwan Wasman Qadir
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
;Department of Physics,
College of Education,
Erbil 44001, Kurdistan Region,
College of Education,
Salahaddin University—Hawler
,Erbil 44001, Kurdistan Region,
Iraq
Zubair Ahmad
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
e-mail: zubairtarar@um.edu.my
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
e-mail: zubairtarar@um.edu.my
Khaulah Sulaiman
Low Dimensional Material Research Centre,
Department of Physics,
Kuala Lumpur 50603,
Department of Physics,
University of Malaya
,Kuala Lumpur 50603,
Malaysia
1Corresponding author.
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received June 3, 2014; final manuscript received November 21, 2014; published online January 15, 2015. Assoc. Editor: Santiago Silvestre.
J. Sol. Energy Eng. Jun 2015, 137(3): 034503 (4 pages)
Published Online: June 1, 2015
Article history
Received:
June 3, 2014
Revision Received:
November 21, 2014
Online:
January 15, 2015
Citation
Qadir, K. W., Ahmad, Z., and Sulaiman, K. (June 1, 2015). "Thermal Annealing Effect on the Optical, Electrical and Morphological Properties of the PBTTT-C12:PC71BM Blend Films." ASME. J. Sol. Energy Eng. June 2015; 137(3): 034503. https://doi.org/10.1115/1.4029230
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