Effect of solvent annealing on the crystallinity of spray coated ternary blend films prepared using low boiling point solvents

Aziz, Farhana; Ismail, Ahmad Fauzi; Aziz, Mohd Zaidan Abdul; Soga, Tetsuo

doi:10.1016/j.cep.2014.03.007

Cited by 14 publications

(9 citation statements)

References 39 publications

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“…It is very important to control the film thickness and processing conditions of the active layer, where photons were absorbed to generate excitons, in order to achieve high short-circuit current and power conversion efficiencies (PCE) [4][5][6][7][8][9]. In recent years, new donor and acceptor materials or additive materials have been applied to improve the photoelectric conversion property of photoactive layer by enhancing the capture ability of the donor/ acceptor (D/A) hetero-junctions and optimizing the energy level alignment of interface [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of preparation parameters on performance of P3HT: PCBM solar cells

Chen

Zeng

et al. 2015

Materials Science in Semiconductor Processing

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Section: Introductionmentioning

confidence: 99%

Effect of preparation parameters on performance of P3HT: PCBM solar cells

Chen

Zeng

et al. 2015

Materials Science in Semiconductor Processing

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“…The shape of the shoulders at about 547 and 607 nm remain relatively the same as SQ3 increased. This indicates that there was no disruption to P3HT crystallinity (Aziz et al, 2014). Increasing the dye content in the P3HT:PCBM blend increases light harvesting through the increase in absorbance and broadening of the absorption range.…”

Section: Absorption Characteristics Of P3ht:sq3:pcbm Blendsmentioning

confidence: 92%

Efficiency enhancement in P3HT:PCBM blends using Squarylium III dye

Tembo¹,

Munyati²,

Hatwaambo³

et al. 2015

Afr. J. Pure Appl. Chem.

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Nano-size thin films comprising poly (3-hexylthiophene) (P3HT) and a fullerene derivative [6, 6] phenyl-C 61 -butyric acid methyl ester (PCBM) incorporating squarylium dye III (SQ3) are reported. The materials prepared were evaluated for their optical, electrical and photo-conversion efficiency. Active layer materials comprising a blend of P3HT:SQ3:PCBM were deposited by spin-coating to produce thin films measuring 100 nm and subsequently annealed at 140°C for 10 min. The films were characterized by UV-Vis-NIR spectroscopy for their optical properties, atomic force microscopy for surface morphology and film thickness, and electrical properties. Optical measurements for blends incorporating different amounts of dye showed increased photo-absorbance with increasing dye concentration. The combined contribution of SQ3 and thermal annealing resulted in increased power conversion efficiency (η) of pristine P3HT:PCBM solar cells from 1.9 to 3.9 %. The dye in the active layer improved photo-absorption by enhanced light harvesting while thermal treatment improved the nanoscale morphology leading to better metal-film interface contact and broadening of the absorption wavelength range.

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“…The main reason for the performance enhancement is that the annealing treatment is able to lower R s of the PSC. Aziz et al [14] studied the effects of solvent annealing with subsequent thermal annealing on the crystallinity of spray coated ternary blends films prepared using low boiling point solvents. The improvement in crystallinity was observed in solvent annealed and thermal annealed films at 130 1C and 140 1C mainly due to higher ordering in such films.…”

Section: Substrate Temperature and Annealing Treatmentmentioning

confidence: 99%

“…Blade coating [5,6], spin coating [7][8][9], spray coating [10][11][12][13][14][15], dip coating [1], screen printing [16], gravure printing [17], and ink-jet printing [18][19][20] are among the methods used to fabricate the PSC. Table 1 lists the previous researches on PSC prepared using different methods.…”

Section: Introductionmentioning

confidence: 99%