Article

Solid-state dye-sensitized solar cells fabricated with nanoporous TiO2 and TPD dyes: Analysis of penetration behavior and I–V characteristics

Chemical Physics Letters (Impact Factor: 1.99). 06/2011; 510(1-3):93-98. DOI: 10.1016/j.cplett.2011.05.005

ABSTRACT We present the synthesis, electrochemical properties and device-based investigation of triphenylene diamine (TPD) sensitizer with an extended π system consisting of donor, electron conducting and anchoring group for solid-state dye-sensitized solar cells. Solid-state dye-sensitized solar cells were fabricated using blocking TiO2 electrodes, nanoporous TiO2 electrodes and the organic hole-transporting medium, HTM (spiro-OMeTAD) in a fluorine doped tin oxide/blocking TiO2/nanoporous TiO2/TPDs/hole transport material/Au configuration. Solid state dye sensitized solar cell consisting of TPD_2 as sensitizer on mesoporous TiO2 shows the best results with a short-circuit current of 2.8 mA/cm2, an open circuit voltage of 835 mV and an overall conversion efficiency of 0.97%.Graphical abstractWe present the synthesis, electrochemical properties and device-based investigation of triphenylene diamine (TPD) sensitizer with an extended π system consisting of donor, electron conducting and anchoring group for solid-state dye-sensitized solar cells. Solid state dye sensitized solar cell consisting of TPD_2 as sensitizer on mesoporous TiO2 shows the best results with a short-circuit current of 2.8 mA/cm2, an open circuit voltage of 835 mV and an overall conversion efficiency of 0.97%.View high quality image (103K)Highlights► We fabricate solid state dye solar cells using TiO2 electrodes and TPD dyes. ► Blocking TiO2 layer prevents back electron reactions. ► Photovoltaic properties of solar cells using TPD dyes show high efficiency.

Download full-text

Full-text

Available from: Mukundan Thelakkat, Jul 07, 2014
1 Follower
 · 
117 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: a b s t r a c t Designing a suitable mesoporous framework material for the selective adsorption or immobilization of biomolecules is a very challenging area of research. Mesoporous ternary Co–Si–Al oxide materials with large mesopore and their nanoscale ordering have been reported. The synthesis of these ternary oxides are accomplished through evaporation induced self-assembly (EISA) method using Pluronic non-ionic surfactant F127 under non-aqueous sol–gel route. N 2 sorption study revealed high BET surface areas for these materials. These materials exhibited very efficient and selective adsorption for the essential bio-molecules like vitamin C (ascorbic acid), vitamin B 6 (pyridoxine) and vitamin B 3 (nicotinic acid) from their respective aqueous solutions.
    Chemical Physics Letters 04/2012; 535:69. DOI:10.1016/j.cplett.2012.03.037 · 1.99 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Inverted bulk heterojunction solar cells have recently captured high interest due to their stability and lifetime. The inverted-type configuration protects cells from the damage by oxygen and moisture in air. This has been achieved by the development of solution processable n-type semiconductors. TiO2 and ZnO are mainly used as cathode electrode layers and air stable Au electrode replaces with air sensitive Al electrode in inverted-type solar cells. In this paper, inverted bulk heterojunction solar cells are fabricated based on poly(3-hexylthiophene) (P3HT) and the N,N′-bis-dehydroabietyl-3,4,9,10-perylene dimide (PDI) materials. Solution processable ZnO cathode layer is used as electron collecting electrode. Bulk heterojunction solar cells are characterized using different blend ratios (1:1, 1:2 and 1:3) of P3HT and PDI. Nanostructured morphologies of P3HT:PDI composite films are investigated by means of Atomic Force Microscopy, which are correlated with device performance. Better device performance is observed in a flat ZnO cathode electrode layer/P3HT:PDI/Gold device configuration with the 1:3 blend ratio of P3HT:PDI film. A poly(3-hexylthiophene) (P3HT)-based inverted bulk heterojunction solar cell using PDI as acceptor is achieved an open-circuit voltage of 350 mV, current density of 0.72 mA/cm2 leading to a power conversion efficiency (IPCE) of 8.2%.
    Renewable Energy 07/2012; 43:378-382. DOI:10.1016/j.renene.2011.11.048 · 3.36 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper reports additive-free, reproducible, low-temperature solution-based process for the preparation of crystalline ZnO nanorods by homogeneous precipitation from zinc acetate. Also, ZnO nanorod structured dye sensitized solar cells using ruthenium dye (Z907) have been fabricated and characterized. The formation and growth of zinc oxide nanorods are successfully achieved. We analyzed three different synthesis method using solution phase, autoclave and microwave. The calcination effects on the morphology of ZnO nanorods are also investigated. Analysis of ZnO nanorods shows that calcination at lower temperature is resulted in a nanorod growth. Additive-free, well-aligned ZnO nanorods are obtained with the length of 330–558 nm and diameters of 14–36 nm. The XRD, SEM, and PL spectra have been provided for the characterization of ZnO nanorods. Microwave-assisted ZnO nanostructured dye sensitized solar cell devices yielded a short-circuit photocurrent density of 6.60 mA/cm2, an open-circuit voltage of 600 mV, and a fill factor of 0.59, corresponding to an overall conversion efficiency of 2.35% under standard AM 1.5 sun light.
    Advanced Powder Technology 09/2012; 23(5):655–660. DOI:10.1016/j.apt.2011.08.003 · 1.64 Impact Factor
Show more