Optical Response and Photovoltaic Performance of Organic Solar Cells Based on DH6T:Alq3 Active Layer
DOI:
https://doi.org/10.6000/1929-6002.2016.05.01.1Keywords:
Alq3, DH6T, Organic composite, Doping, Absorption edge, organic solar cells.Abstract
This research work reports on the optical and photovoltaic performance of dihexyl-sexithiophene (DH6T) doped with various molar percentages of tris-8-hydroxyquinolinate aluminium (Alq3) dissolved in chloroform/hexane co-solvent. Films of DH6T(1-x)Alq3(x) composite have been produced by casting technique aiming at investigating their absorption edge energies (Eabs) and hence identifying the optimum content of Alq3. It was found that by introducing a controlled amount of Alq3, the value of Eabs can be tuned from 2.69 eV to 1.76 eV. An empirical equation was derived to fit the obtained experimental data, by which an optimum Eabs at molar concentration of (x ≈ 25%) was predicted. Finally, organic solar cells based on the optimum active layer content were fabricated and tested. Comparably, it was observed that the photovoltaic performance of the DH6T:Alq3 based devices is much better than that achieved for the DH6T:PCBM based ones. Efficiency and fill factor for the devices based on DH6T(0.75)Alq3(0.25) active layer were found to be 0.22% and 26.5%, respectively, while those for DH6T:PCBM based devices were about 0.01% and 24%, respectively.
References
Shirota Y. Organic materials for electronic and optoelectronic devices. Journal of Materials Chemistry 2000; 10: 1-25. http://dx.doi.org/10.1039/a908130e DOI: https://doi.org/10.1039/a908130e
Narasimharaghavan PK, Yadav H, Varadarajan TS, Patnaik LN, Das S. Organic photoconductors: Dark and photoconduction studies in two p-dimethylamino styryl dyes derived from pyridine-2 and pyridine-4. Journal of Materials Science 1991; 26: 4774-86. http://dx.doi.org/10.1007/BF00612417 DOI: https://doi.org/10.1007/BF00612417
Nelson J. Organic photovoltaic films. Materials Today 2002; 5: 20-7. http://dx.doi.org/10.1016/S1369-7021(02)05532-3 DOI: https://doi.org/10.1016/S1369-7021(02)05532-3
Kim K, Liu J, Namboothiry MAG, Carroll DL. Roles of donor and acceptor nanodomains in 6% efficient thermally annealed polymer photovoltaics Applied Physics Letters 2007; 90: 163511. http://dx.doi.org/10.1063/1.2730756 DOI: https://doi.org/10.1063/1.2730756
Fraboni B, DiPietro R, Cavallini A, Cosseddu P, Bonfiglio A, Vogel J. Photocurrent studies of sexythiophene-based OFETs. Applied Physics A: Materials Science and Processing 2009; 95: 37-41. http://dx.doi.org/10.1007/s00339-008-4998-9 DOI: https://doi.org/10.1007/s00339-008-4998-9
Iosip MD, Destri S, Pasini M, Porzio W, Pernstich KP, Batlogg B. New dithieno[3,2-b: 2',3'-d]thiophene oligomers as promising materials for organic field-effect transistor applications. Synthetic Metals 2004; 146: 251-7. http://dx.doi.org/10.1016/j.synthmet.2004.08.004 DOI: https://doi.org/10.1016/j.synthmet.2004.08.004
Nguyen PT, Rammelt U, Plieth W, Richter S, Plötner M, Fischer WJ, et al. Experiments with organic field effect transistors based on polythiophene and thiophene oligomers. Electrochimica Acta 2005; 50: 1757-63. http://dx.doi.org/10.1016/j.electacta.2004.10.062 DOI: https://doi.org/10.1016/j.electacta.2004.10.062
Sakai J, Taima T, Saito K. Efficient oligothiophene: fullerene bulk heterojunction organic photovoltaic cells. Organic Electronics 2008; 9: 582-90. http://dx.doi.org/10.1016/j.orgel.2008.03.008 DOI: https://doi.org/10.1016/j.orgel.2008.03.008
Veenstra SC, Malliaras GG, Brouwer HJ, Esselink FJ, Krasnikov VV, van Hutten PF, et al. Sexithiophene-C60 blends as model systems for photovoltaic devices. Synthetic Metals 1997; 84: 971-2. http://dx.doi.org/10.1016/S0379-6779(96)04235-X DOI: https://doi.org/10.1016/S0379-6779(96)04235-X
Ye R, Baba M, Suzuki K, Mori K. Fabrication of highly air-stable ambipolar thin-film transistors with organic heterostructure of F16CuPc and DH-a6T. Solid-State Electronics 2008; 52: 60-2. http://dx.doi.org/10.1016/j.sse.2007.07.010 DOI: https://doi.org/10.1016/j.sse.2007.07.010
Loussaïef N, Kouki F, Delannoy P, Garnier F, Hassine L, Bouchriha H. Transient photocurrent in sexithiophene-based photovoltaic cells. Materials Science and Engineering: C 2002; 21: 255-8. http://dx.doi.org/10.1016/S0928-4931(02)00076-0 DOI: https://doi.org/10.1016/S0928-4931(02)00076-0
Horowitz G, Romdhane S, Bouchriha H, Delannoy P, Monge J-L, Kouki F, et al. Optoelectronic properties of sexithiophene single crystals. Synthetic Metals 1997; 90: 187-92. http://dx.doi.org/10.1016/S0379-6779(98)80005-2 DOI: https://doi.org/10.1016/S0379-6779(98)80005-2
Tavazzi S, Barbarella G, Borghesi A, Meinardi F, Sassella A, Tubino R. Absorption coefficient of sexithiophene thin films grown by organic molecular beam deposition. Synthetic Metals 2001; 121: 1419 - 20. http://dx.doi.org/10.1016/S0379-6779(00)01141-3 DOI: https://doi.org/10.1016/S0379-6779(00)01141-3
Wu MW, Conwell EM. Transport in [alpha]-sexithiophene films. Chemical Physics Letters 1997; 266: 363-7. http://dx.doi.org/10.1016/S0009-2614(97)00022-5 DOI: https://doi.org/10.1016/S0009-2614(97)00022-5
Yakuphanoglu F. Electrical conductivity and electrical modulus properties of [alpha], [omega]-dihexylsexithiophene organic semiconductor. Physica B: Condensed Matter 2007; 393: 139-42. http://dx.doi.org/10.1016/j.physb.2006.12.075 DOI: https://doi.org/10.1016/j.physb.2006.12.075
Knupfer M, Liu X. Interface electronic properties of oligothiophenes: the effect of chain length and chemical substituents. Surface Science 2006; 600: 3978-81. http://dx.doi.org/10.1016/j.susc.2006.01.110 DOI: https://doi.org/10.1016/j.susc.2006.01.110
Liu X, Knupfer M, Huisman BH. Electronic properties of the interface between [alpha],[omega]-dihexyl-quaterthiophene and gold. Surface Science 2005; 595: 165-71. http://dx.doi.org/10.1016/j.susc.2005.08.007 DOI: https://doi.org/10.1016/j.susc.2005.08.007
Murphy AR, Fréchet JMJ, Chang P, Lee J, Subramanian V. Organic Thin Film Transistors from a Soluble Oligothiophene Derivative Containing Thermally Removable Solubilizing Groups. Journal of the American Chemical Society 2004; 126: 1596-7. http://dx.doi.org/10.1021/ja039529x DOI: https://doi.org/10.1021/ja039529x
Sato T, Fujitsuka M, Segawa H, Shimidzu T, Tanaka K. Dual photoluminescence of polythiophene thin films. Synthetic Metals 1998; 95: 107-12. http://dx.doi.org/10.1016/S0379-6779(98)00040-X DOI: https://doi.org/10.1016/S0379-6779(98)00040-X
Xiao L, Liu Y, Xiu Q, Zhang L, Guo L, Zhang H, et al. Novel polymeric metal complexes as dye sensitizers for Dye-sensitized solar cells based on poly thiophene containing complexes of 8-hydroxyquinoline with Zn(II),Cu(II) and Eu(III) in the side chain. Tetrahedron 2010; 66: 2835-42. http://dx.doi.org/10.1016/j.tet.2010.02.039 DOI: https://doi.org/10.1016/j.tet.2010.02.039
Muhammad FF, Abdul Hapip AI, Sulaiman K. Study of optoelectronic energy bands and molecular energy levels of tris (8-hydroxyquinolinate) gallium and aluminum organometallic materials from their spectroscopic and electrochemical analysis. Journal of Organometallic Chemistry 2010; 695: 2526-31. http://dx.doi.org/10.1016/j.jorganchem.2010.07.026 DOI: https://doi.org/10.1016/j.jorganchem.2010.07.026
Aziz SB. Modifying Poly (Vinyl Alcohol)(PVA) from Insulator to Small-Bandgap Polymer: A Novel Approach for Organic Solar Cells and Optoelectronic Devices. Journal of Electronic Materials: 1-10.
Aziz SB, Ahmed HM, Hussein AM, Fathulla AB, Wsw RM, Hussein RT. Tuning the absorption of ultraviolet spectra and optical parameters of aluminum doped PVA based solid polymer composites. J Mater Sci: Mater Electron 2015; 26: 8022-8. http://dx.doi.org/10.1007/s10854-015-3457-6 DOI: https://doi.org/10.1007/s10854-015-3457-6
Muhammad FF, Aziz SB, Hussein SA. Effect of the dopant salt on the optical parameters of PVA: NaNO3 solid polymer electrolyte. J Mater Sci: Mater Electron 2014; 26: 521-9. http://dx.doi.org/10.1007/s10854-014-2430-0 DOI: https://doi.org/10.1007/s10854-014-2430-0
Afzali A, Breen TL, Kagan CR. An Efficient Synthesis of Symmetrical Oligothiophenes: Synthesis and Transport Properties of a Soluble Sexithiophene Derivative. Chemistry of Materials 2002; 14: 1742-6. http://dx.doi.org/10.1021/cm011528l DOI: https://doi.org/10.1021/cm011528l
Muhammad FF, Sulaiman K. Utilizing a simple and reliable method to investigate the optical functions of small molecular organic films - Alq3 and Gaq3 as examples. Measurement 2011; 44: 1468-74. http://dx.doi.org/10.1016/j.measurement.2011.05.017 DOI: https://doi.org/10.1016/j.measurement.2011.05.017
Abay B, Güder HS, Efeoglu H, Yogurtçu YK. Excitonic absorption and Urbach-Martienssen's tails in Er-doped and undoped n-type InSe. Journal of Physics D: Applied Physics 1999; 32: 2942. http://dx.doi.org/10.1088/0022-3727/32/22/317 DOI: https://doi.org/10.1088/0022-3727/32/22/317
Kittel C. Introduction to solid state physics: Wiley; 2005.
Bouarissa N. Pseudopotential calculations of Cd1−xZnxTe: Energy gaps and dielectric constants. Physica B: Condensed Matter 2007; 399: 126-31. http://dx.doi.org/10.1016/j.physb.2007.05.034 DOI: https://doi.org/10.1016/j.physb.2007.05.034
Muhammad FF, Sulaiman K. Photovoltaic performance of organic solar cells based on DH6T/PCBM thin film active layers. Thin Solid Films 2011; 519: 5230-3. http://dx.doi.org/10.1016/j.tsf.2011.01.165 DOI: https://doi.org/10.1016/j.tsf.2011.01.165
Jin S-H, Vijaya Kumar Naidu B, Jeon H-S, Park S-M, Park J-S, Chul Kim S, et al. Optimization of process parameters for high-efficiency polymer photovoltaic devices based on P3HT: PCBM system. Solar Energy Materials and Solar Cells 2007; 91: 1187-93. http://dx.doi.org/10.1016/j.solmat.2007.04.001 DOI: https://doi.org/10.1016/j.solmat.2007.04.001
Muhammad FF. Design approaches to improve organic solar cells. Journal of Technology Innovations in Renewable Energy 2014; 3: 1-8. http://dx.doi.org/10.6000/1929-6002.2014.03.02.4 DOI: https://doi.org/10.6000/1929-6002.2014.03.02.4
Sakai J, Taima T, Yamanari T, Saito K. Annealing effect in the sexithiophene: C70 small molecule bulk heterojunction organic photovoltaic cells. Solar Energy Materials and Solar Cells 2009; 93: 1149-53. http://dx.doi.org/10.1016/j.solmat.2009.02.007 DOI: https://doi.org/10.1016/j.solmat.2009.02.007
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