Low cost hybrid solar cell integration on wall tiles

On this paper the first Building Integrated Hybrid Photovoltaic (BIHPV) cell obtained on a commercial tile is presented. The experimental techniques used allow a future low cost development of these cells for its massive use on facades for buildings. The basic concept includes a metal projected layer as back contact with an electron injection layer of electrodeposited ZnO, an organic PBCBM/P3HT photovoltaic cell with a closing TCO thin film on top. Integration with the substrate problems have been solved and allow further work on cell performance and durability.Reyes Tolosa, MD.; Orozco Messana, J.; Hernández Fenollosa, MDLÁ.; Camaratta, R.; Niedersberg Correia, Á.; Bolink, HJ.; Soriano, A.... (2011). Low cost hybrid solar cell integration on wall tiles. ECS Transactions. 41(4):141-146. doi:10.1149/1.3628619S14114641

Guion construcción de una celda solar

Esta guía permite al alumno realizar la práctica "Construcción de una célula solar". Contiene una breve introducción a los dispositivos fotovoltaicos y hace referencia al tipo de dispositivo que se preparará en el prácticum. Tras la introducción se encuentra la sección experimental. En primer lugar se mencionan los materiales necesarios. Después se explican los diferentes pasos necesarios para construir una célula solar. Esta sección va acompañada de imágenes aclaratorias. La guía termina con algunas preguntas, el tratamiento de los residuos y algunas referencias bibliográficas.This guide allows the student to perform the practicum "Construction of a Solar Cell". It contains a short introduction to photovoltaic devices and refers to the type of device that will be prepared in the practicum. Following the introduction there is the experimental section. First the needed materials are mentioned. Then the different steps needed to contruct a solar cells are explained. This section is acompanied with clarifying images. The guide ends with some questions, waste handling and a few literature references

Photorefractive polymers

This thesis describes the synthesis and properties of photorefractive polymers. Photorefractive polymers are materials in which the refractive index can be varied by the interaction with light. Unlike in numerous other photosensitive materials, in photorefractive materials this occurs via photogeneration,transport and trapping of charges and an electro-optic response, which results in an erasable refractive index modulation. Zie: Summar

Impact of merging commercial breeding lines on the genetic diversity of Landrace pigs

Background: The pig breeding industry has undergone a large number of mergers in the past decades. Various commercial lines were merged or discontinued, which is expected to reduce the genetic diversity of the pig species. The objective of the current study was to investigate the genetic diversity of different former Dutch Landrace breeding lines and quantify their relationship with the current Dutch Landrace breed that originated from these lines. Results: Principal component analysis clearly divided the former Landrace lines into two main clusters, which are represented by Norwegian/Finnish Landrace lines and Dutch Landrace lines. Structure analysis revealed that each of the lines that are present in the Dutch Gene bank has a unique genetic identity. The current Dutch Landrace breed shows a high level of admixture and is closely related to the six former lines. The Dumeco N-line, which is conserved in the Dutch Gene bank, is poorly represented in the current Dutch Landrace. All seven lines (the six former and the current line) contribute almost equally to the genetic diversity of the Dutch Landrace breed. As expected, the current Dutch Landrace breed comprises only a small proportion of unique genetic diversity that was not present in the other lines. The genetic diversity level, as measured by Eding's core set method, was equal to 0.89 for the current Dutch Landrace breed, whereas total genetic diversity across the seven lines, measured by the same method, was equal to 0.99. Conclusions: The current Dutch Landrace breed shows a high level of admixture and is closely related to the six former Dutch Landrace lines. Merging of commercial Landrace lines has reduced the genetic diversity of the Landrace population in the Netherlands, although a large proportion of the original variation is maintained. Thus, our recommendation is to conserve breeding lines in a gene bank before they are merged.</p