Evaluation of decay photocurrent measurements in dye-sensitized solar cells: Application to laser beam-induced current technique

Abstract

SUMMARYThe use of the laser beam-induced current (LBIC) technique in photovoltaic devices is widespread, but its use in photoelectrochemical cells, such as dye-sensitized solar cells (DSSCs), is limited due to the configuration of these devices. The main reason is the very slow response time of DSSCs in the decay process, and therefore LBIC scans take too long to perform. We have designed a procedure published in the literature to correct the photocurrent values obtained by the LBIC technique, based on an algorithm that uses a decreasing mono-exponential model. This work presents a study of the decay measurements in DSSCs using several functions, in order to improve the algorithm designed. It concludes that functions such as a decreasing bi-exponential or Becquerel function generate better fits to experimental data.

Nanostructured ZnO, TiO2, and Composite ZnO/TiO2Films for Application in Dye-Sensitized Solar Cells

“…The basic structure of dye-sensitized solar cells consists of a nanostructured mesoporous semiconductor film deposited on a glass or a flexible substrate, a platinum or platinised counter electrode and a liquid, and gel or solid electrolyte containing a redox couple, which fills the space between the two electrodes [3]. A monolayer of dye is adsorbed on the surface of the semiconductor and acts as the sensitizer.…”

Performance enhancement of natural pigments on a high light transmission ZrO2nanoparticle layer in a water-based dye-sensitized solar cell

“…The photocurrent results from the pumping of electrons in the pigments under light excitation. Dyesensitized solar cell [31][32][33] has been gaining significantly increased attention recently. The results in Table I show that the efficiency of the photoelectric conversion of the green part of Codiaeum varie and Aglaonema are both greater than 0.1%.…”

“…The efficiency of the green part of Codiaeum varie deposited on the ZrO 2 nanoparticle layer increased to 0.688%. Dyesensitized solar cell [31][32][33] has been gaining significantly increased attention recently. Our technology has important potential applications in the field of dye-sensitized solar cell in the near future.…”

A review on PEDOT-based counter electrodes for dye-sensitized solar cells

“…Furthermore, this breakthrough has established the state‐of‐the‐art DSSCs for two decades: a dye‐sensitized nanocrystalline TiO 2 film as a photoanode, redox (in a nonaqueous solvent) as electrolyte, and Pt as an efficient counter electrode (CE). This has promoted intensive research on DSSCs .…”