A methodology for improving laser beam induced current images of dye sensitized solar cells

Navas, Francisco Javier; Alcántara, Rodrigo; Fernández-Lorenzo, Concha; Martín, Joaquín
June 2009
Review of Scientific Instruments;Jun2009, Vol. 80 Issue 6, p063102
Academic Journal
Using the laser beam induced current (LBIC) technique for the study of solar cells and photovoltaic devices, it is possible to obtain images representing the different degrees of quantum efficiency observed on the surface of these elements. Dye sensitized solar cells (DSSCs) or photoelectrochemical solar cells, in contrast to those based on solid-solid interfaces, show a slow response to irradiance variations—up to tens of seconds. This is basically due to both viscous matter transport processes and load transfer. This response is inappreciable when the device is functioning continuously but when a LBIC scan is performed, in which the laser moves quickly from one point to another, the slow response produces a memory effect and the signal generated at one given point depends on the conversion efficiency coefficients of the previously excited positions, resulting in diffuse images and a lack of sharpness. This work presents a methodology to correct high-resolution LBIC mappings of DSSCs using an algorithm based on the kinetics of the discharge process of the irradiated zone. The validity of the proposed method has been evaluated by carrying out experiments where the algorithm has been applied to LBIC mappings.


Related Articles

  • A precision method for laser focusing on laser beam induced current experiments. Poce-Fatou, J. A.; Martın, J.; Alcántara, R.; Fernández-Lorenzo, C. // Review of Scientific Instruments;Nov2002, Vol. 73 Issue 11, p3895 

    Using the laser beam induced current (LBIC) technique for the study of solar cells and photovoltaic devices, it is possible to obtain images representing the different degrees of quantum efficiency observed on the surface of these elements. Since the resolution of these images depends on the...

  • Roadside Solar Power. Smith, Nancy // Mother Earth News;Aug/Sep2004, Issue 205, p20 

    Reports on the installation of a solar panel system in front of a highway sound barrier by the Solarcentury company in Portsmouth, England in spring 2004. Information on the solar lighting system; Use of photovoltaic thin film along the highway; Other projects of Solarcentury.

  • Detailed Analysis of Temperature Characteristics of an InGaP/InGaAs/Ge Triple-Junction Solar Cell. Nishioka, Kensuke; Sueto, Tsuyoshi; Uchida, Masaki; Ota, Yasuyuki // Journal of Electronic Materials;Jun2010, Vol. 39 Issue 6, p704 

    Temperature characteristics of an InGaP/InGaAs/Ge triple-junction solar cell were analyzed in detail using an equivalent circuit calculation. The current�voltage ( I� V) characteristics of single-junction solar cells (InGaP, InGaAs, Ge solar cells) were measured at various...

  • Accelerated Light-Induced Degradation (ALID) for Monitoring of Defects in PV Silicon Wafers and Solar Cells. Wilson, Marshall; Edelman, Piotr; Savtchouk, Alexandre; D'Amico, John; Findlay, Andrew; Lagowski, Jacek // Journal of Electronic Materials;Jun2010, Vol. 39 Issue 6, p642 

    In crystalline silicon, above-bandgap illumination can transform defects into strong recombination centers, degrading minority-carrier lifetime and solar cell efficiency. This light-induced degradation (LID) is due primarily to boron�oxygen and iron�boron defects, and can be reversed...

  • Solar cells catch light to lighten array load. Reynolds, Melanie // Electronics Weekly;4/18/2007, Issue 2284, p1 

    The article reports that researchers at the Georgia Tech Research Institute in the U.S. has developed three-dimensional solar cells which can capture nearly all of the light which strikes them. According to the author, three-dimensional solar cells should improve the efficiency of photovoltaic...

  • Solar cells in the spotlight.  // Electronics Weekly;9/17/2008, Issue 2352, p39 

    The article presents information on solar cells. These cells bring together detailed reference information about photovoltaic technology. The light-absorbing material of a solar cell will lead to photogeneration of charge carriers and a conductive contact will carry off the electrons into...

  • Study of minority carrier diffusion lengths in photoactive layers of multijunction solar cells. Mintairov, S. A.; Andreev, V. M.; Emelyanov, V. M.; Kalyuzhnyy, N. A.; Timoshina, N. K.; Shvarts, M. Z.; Lantratov, V. M. // Semiconductors;Aug2010, Vol. 44 Issue 8, p1084 

    technique for determining a minority carrier’s diffusion length in photoactive III–V layers of solar cells by approximating their spectral characteristics is presented. Single-junction GaAs, Ge and multi-junction GaAs/Ge, GaInP/GaAs, and GaInP/GaInAs/Ge solar cells fabricated by...

  • In situ 3-hexylthiophene polymerization onto surface of TiO2 based hybrid solar cells. Shengli Lu; Sam-Shajing Sun; Xiaoxia Jiang; Jianwei Mao; Tiehu Li; Kexi Wan // Journal of Materials Science: Materials in Electronics;Jul2010, Vol. 21 Issue 7, p682 

    A novel configuration of hybrid solar cells fabricated using TiO2 and in situ polymerization of poly(3-hexylthiophene), or P3HT, on the surface of TiO2 is reported. Comparison of UV–Vis absorption and current/voltage (I/V) characteristics of devices with or without in situ polymerized...

  • Design of a Pneumatic Robotic Arm for Solar Cell Tester System by Using PLC Controller. Al Mashhadany, Yousif I.; Abd Rahim, Nasrudin // International Journal of Computer Science Issues (IJCSI);Jan2013, Vol. 10 Issue 1, p658 

    Solar cell testers sort photovoltaic cells according to their electrical performance, tested under simulated sunlight. A variety of testers exist, but they all face a common challenge of handling cells that are very small and thin, which makes it difficult to transport the cells from the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics