Metal salt modified PEDOT:PSS as anode buffer layer and its effect on power conversion efficiency of organic solar cells

Kadem, Burak; Cranton, Wayne; Hassan, Aseel

doi:10.1016/j.orgel.2015.05.019

Cited by 66 publications

(42 citation statements)

References 27 publications

(26 reference statements)

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“…Besides that, the acidic nature of PEDOT:PSS (pH between 1 and 2) corrodes the interface between the ITO and the PEDOT:PSS and causes the diffusion of Indium into the photoactive layer, to result in degradation of the device11. Thus, several approaches have been employed to modify the properties of PEDOT:PSS, including the incorporation of dopants/additives (e.g., ethylene glycol12, dimethyl sulfoxide13, ionic liquids14, or nanoparticles15), and the post-treatment of the PEDOT:PSS film with suitable materials (e.g., hexafluoroacetone16, surfactant17, salts18, and acids19). …”

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confidence: 99%

Functional solid additive modified PEDOT:PSS as an anode buffer layer for enhanced photovoltaic performance and stability in polymer solar cells

Saianand

Gopalan

et al. 2017

Sci Rep

108

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Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is most commonly used as an anode buffer layer in bulk-heterojunction (BHJ) polymer solar cells (PSCs). However, its hygroscopic and acidic nature contributes to the insufficient electrical conductivity, air stability and restricted photovoltaic (PV) performance for the fabricated PSCs. In this study, a new multifunctional additive, 2,3-dihydroxypyridine (DOH), has been used in the PEDOT: PSS buffer layer to obtain modified properties for PEDOT: PSS@DOH and achieve high PV performances. The electrical conductivity of PEDOT:PSS@DOH films was markedly improved compared with that of PEDOT:PSS. The PEDOT:PSS@DOH film exhibited excellent optical characteristics, appropriate work function alignment, and good surface properties in BHJ-PSCs. When a poly(3-hexylthiohpene):[6,6]-phenyl C61-butyric acid methyl ester blend system was applied as the photoactive layer, the power conversion efficiency of the resulting PSCs with PEDOT:PSS@DOH(1.0%) reached 3.49%, outperforming pristine PEDOT:PSS, exhibiting a power conversion enhancement of 20%. The device fabricated using PEDOT:PSS@DOH (1.0 wt%) also exhibited improved thermal and air stability. Our results also confirm that DOH, a basic pyridine derivative, facilitates adequate hydrogen bonding interactions with the sulfonic acid groups of PSS, induces the conformational transformation of PEDOT chains and contributes to the phase separation between PEDOT and PSS chains.

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confidence: 99%

Functional solid additive modified PEDOT:PSS as an anode buffer layer for enhanced photovoltaic performance and stability in polymer solar cells

Saianand

Gopalan

et al. 2017

Sci Rep

108

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“…The ideality factor with a value of 1.6 was estimated from the dark characteristics presented in the inset of Fig. 7; this value indicates that lower recombination rate occurs within the device which could be assigned to the effective charge collection from the respected electrodes by employing efficient hole and electron transport layers [19,20]. The efficient charge collection contributes in the high FF obtained in the current work [42].…”

Section: Electrical Propertiesmentioning

confidence: 84%

“…Devices were fabricated using indium tin oxide (ITOΨ coated glass slides with a sheet resistance of 8-12 /□ from the same supplier. P3HT:PCBM active layer processing, the PEDOT:PSS as hole transport layer treatment and Alq3 as electron transport layer have been prepared following procedures described in our previous publications [10,[15][16][17][18][19][20]. …”

Section: Sample Preparationmentioning

confidence: 99%

“…In a final attempt to improve the performance of the OSC of this study, the poly(3,4-ethylenedioxythiopheneΨ-poly(styrenesulfonateΨ (PEDOT:PSSΨ hole transport layer (HTLΨ has been doped with different metal salts, which include lithium chloride (LiClΨ, cadmium chloride (CdCl 2 Ψ, sodium chloride (NaClΨ and copper chloride (CuCl 2 Ψ in solution forms. It has been concluded that PEDOT:PSS treated with LiCl solution (10 mg.ml -1 Ψ has resulted in the most improved P3HT:PCBM-based device performance with PCE of 6.82% [20].…”

Section: Introductionmentioning

confidence: 99%

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Organic solar cells: Study of combined effects of active layer nanostructure and electron and hole transport layers

2017

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“…The inverted organic solar cells (IOSCs) exhibit competitive performance and offer better stability compared with the traditional OSCs [3]. The nature of the contacts on both sides of the active layer is considered as an essential feature to determine the OSCs parameters, hence the final power conversion efficiency (PCE) [4]. Titanium dioxide (TiO 2 ) films are used in wide range of applications such as photocatalysis, separations, sensor devices, paints, and solar cells [5].…”

Section: Introductionmentioning

confidence: 99%

Rutile TiO2 films as electron transport layer in inverted organic solar cell

Al‐Hashimi¹,

Kadem

Hassan

2018

J Mater Sci: Mater Electron

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Titanium dioxide (TiO 2 ) thin films were prepared by sol-gel spin coating method and deposited on ITO-coated glass substrates. The effects of different heat treatment annealing temperatures on the phase composition of TiO 2 films and its effect on the optical band gap, morphological, structural as well as using these layers in P3HT:PCBM-based organic solar cell were examined. The results show the presence of rutile phases in the TiO 2 films which were heat-treated for 2h at different temperatures (200 o C, 300 o C, 400 o C, 500 o C and 600 o C). The optical properties of the TiO 2 films have altered by temperature with a slight decrease in the transmittance intensity in the visible region with increasing the temperature. The optical band gap values were found to be in the range of 3.28-3.59eV for the forbidden direct electronic transition and 3.40-3.79eV for the allowed direct transition.TiO 2 layers were used as electron transport layer in inverted organic solar cells and resulted in a power conversion efficiency of 1.59% with short circuit current density of 6.64mA.cm -2 for TiO 2 layer heat-treated at 600 o C.

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Metal salt modified PEDOT:PSS as anode buffer layer and its effect on power conversion efficiency of organic solar cells

Cited by 66 publications

References 27 publications

Functional solid additive modified PEDOT:PSS as an anode buffer layer for enhanced photovoltaic performance and stability in polymer solar cells

Functional solid additive modified PEDOT:PSS as an anode buffer layer for enhanced photovoltaic performance and stability in polymer solar cells

Organic solar cells: Study of combined effects of active layer nanostructure and electron and hole transport layers

Rutile TiO2 films as electron transport layer in inverted organic solar cell

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