Degradation of Polymer Solar Cells Based on P3HT:PCBM System

Abstract:

The degradation of the performance of the polymer solar cell based on the blend structures system of poly (3-hexylthiophene) (P3HT) and [6,-phenyl C61-butyric acid methyl ester (PCBM) is investigated. This study uses UV-vis absorption spectra, photoluminescence (PL) spectra, charge-transport dark J-V curve chart to explicate the reason for the degradation of the performance of P3HT:PCBM photovoltaic cells. Solar cell performance is degraded primarily through loss in short-circuit current density (Jsc) and fill factor (FF), the reduction in the Jsc and FF of the device is most likely to be due to the formation of the charge transfer complex, deep traps and destruction of the-conjugated system in the degraded P3HT:PCBM device. The exposure to oxygen and photo-oxidation lead to the emergence of these factors of the device performance degradation. Keywords: Degradation; Performance; Solar cells; P3HT: PCBM

• Periodical: Advanced Materials Research (Volume 924)
• Pages: 193-199
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.924.193
• Online since: April 2014
• Authors: Huang Zhong Yu*
• Keywords: Degradation, P3HT: PCBM, Performance, Solar Cell

References

[1] Cowan S R, Banerji N, Leong W L, Heeger A J. Charge Formation, Recombination, and Sweep-Out Dynamics in Organic Solar Cells. Adv Funct Mater, 2012, 22(6): 1116 -1128.

DOI: 10.1002/adfm.201101632

[2] He Z C, Zhong C M, Su S J, Xu M, Wu H B, Cao Y. Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure. Nat Photon, 2012, 6(9) : 591-595.

DOI: 10.1038/nphoton.2012.190

[3] Peet J, Heeger A J, Bazan G. C. Plastic, Solar Cells: Self-Assembly of Bulk Heterojunction Nanomaterials by Spontaneous Phase Separation. Accounts of Chemical Research, 2009, 42 (11): 1700-1708.

DOI: 10.1021/ar900065j

[4] Yu H Z, Peng J B. Performance and lifetime improvement of polymer/fullerene blend photovoltaic cells with a C60 interlayer. Org Electron, 2008, 9 (6): 1022-1025.

DOI: 10.1016/j.orgel.2008.07.010

[5] Liang Y, Xu Z, Xia J, Tsai S, Wu Y, Li G., Ray C, Yu L. For the Bright Future-Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7. 4%. Adv Mater, 2010, 22 (20): E135-E138.

DOI: 10.1002/adma.200903528

[6] You J B, Li X H, Xie F X, Sha W, Kwong J H W, Li G, Choy W C H, Yang Y. Surface Plasmon and Scattering-Enhanced Low-Bandgap Polymer Solar Cell by a Metal Grating Back Electrode. Adv Energy Mater, 2012, 2(10): 1203-1207.

DOI: 10.1002/aenm.201200108

[7] Service R F, Outlook Brightens for Plastic Solar Cells. Science, 2011, 332（6027）, 293-293.

DOI: 10.1126/science.332.6027.293

[8] You J B, Chen C C, Dou L T, Murase S, Duan H S, Hawks S A, Xu T, Son H J, Yu L P, Li G., Yang Y. Metal Oxide Nanoparticles as an Electron-Transport Layer in High-Perfo -rmance and Stable Inverted Polymer Solar Cells. Adv Mater, 2012, 24(38): 5267-5272.

DOI: 10.1002/adma.201201958

[9] Shrotriya V, Ouyang J, Tseng R J, Li G, Yang Y, Chem. Phys. Lett. 2005, 411 (1-3) 138-143.

[10] Grossiord N, Kroon J M, Andriessen R, Blom P W M. Degradation mechanisms in organic photovoltaic devices. Org Electron. 2012, 13(3): 432-456.

DOI: 10.1016/j.orgel.2011.11.027

[11] Hintz H, Egelhaaf H J, Luer L, Hauch J A, Peisert H, ChasséT. Photodegradation of P3HT-A Systematic Study of Environmental Factors. Chemistry of Materials 2011, 23 (2): 145-154.

DOI: 10.1021/cm102373k

[12] Manceau M, Bundgaard E, Carlé J E, Hagemann O, Helgesen M, Sandergaard R, Jorgensen M, Krebs F C. Photochemical stability of pi-conjugated polymers for polymer solar cells: a rule of thumb. J Mater Chem, 2011, 21 (12): 4132-4141.

DOI: 10.1039/c0jm03105d

[13] Rivaton A, Chambon S, Manceau M, Gardette J L, Lemaître N, Guillerez S. Light -induced degradation of the active layer of polymer-based solar cells. Polym Degrad Stab, 2010, 95 (3): 278-284.

DOI: 10.1016/j.polymdegradstab.2009.11.021

[14] Peters C H, Sachs-Quintana I T, Mateker W R, Heumueller T, Rivnay J, Noriega R, Beiley Z M, Hoke E T, Salleo A, McGehee M D, The Mechanism of Burn-in Loss in a High Efficiency Polymer Solar Cell. Adv Mater, 2012, 24 (5): 663-675.

DOI: 10.1002/adma.201103010

[15] Hintz H, Egelhaaf H J, Peisert H, Chasse T, Photo-oxidation and ozonization of poly(3-hexylthiophene) thin films as studied by UV/VIS and photoelectron spectroscopy. Polymer Degradation and Stability, 2010, 95（5）: 818-825.

DOI: 10.1016/j.polymdegradstab.2010.02.004

[16] Hintz H, Sessler C, Peisert H, Egelhaaf H J, Chasse T, Wavelength-Dependent Pathways of Poly-3-hexylthiophene Photo-Oxidation. Chem Mater, 2012, 24（14）: 2739-2743.

DOI: 10.1021/cm3008864

[17] Schafferhans J, Baumann A, Deibel C, Dyakonov V. Trap distribution and the impact of oxygen-induced traps on the charge transport in poly(3-hexylthiophene). Appl Phys Lett, 2008, 93 (9）: 093303-093309.

DOI: 10.1063/1.2978237

[18] Zhokhavets U, Erb T, Hoppe H, Gobsch G., Sariciftci N S. Effect of annealing of poly(3-hexylthiophene)/fullerene bulk heterojunction composites on structural and optical properties. Thin Solid Films, 2006, 496 (2): 679-681.

DOI: 10.1016/j.tsf.2005.09.093

[19] Deschler F, De Sio A, Hauff E V, Kutka P, Sauermann T, Egelhaaf H J, Hauch J, Da Como E. The Effect of Ageing on Exciton Dynamics, Charge Separation, and Recombination in P3HT/PCBM Photovoltaic Blends. Adv Funct Mater, 2012, 22 (7): 1461-1469.

DOI: 10.1002/adfm.201101923

[20] Seemann A, Sauermann T, Lungenschmied C, Armbruster O, Bauer S, Egelhaaf H J, Hauch J, Reversible and irreversible degradation of organic solar cell performance by oxygen. Solar Energy, 2011, 85 (6): 1238-1249.

DOI: 10.1016/j.solener.2010.09.007