A imagística românica de madeira policromada na Península Ibérica (séculos XII-XII) representa uma herança que tem tanto de valioso como de complexo. Exceptuando algumas linhas gerais que determinam características composicionais e simbólicas, o contexto local, a liturgia, os artistas ou as oficinas e a influência de certos modelos prestigiados criaram um cenário altamente atrativo. É importante notar que algumas das estátuas que se encontram preservadas em separado actualmente podem muito bem fazer, numa perspectiva mais vasta, parte de conjuntos maiores de mobiliário litúrgico. Ao mesmo tempo, o número de estudos sobre aspectos técnicos e materiais que envolvem trabalho interdisciplinar tem aumentado. Uma das questões que mais preocupa os académicos é a disseminação das tendências tipológicas e estilísticas. A influência de trabalhos com metal e metais preciosos na policromia temperada deve ser avaliada. Outras vezes, a disseminação de modalidades confinadas a uma área poderá perfeitamente obedecer a motivos de culto e peregrinação. Porém, nem todos os trabalhos seguem estritamente uma modalidade ou outra. Outra hipótese prende-se com a importação de alguns objectos.

Romanesque polychromed wooden imagery in the Iberian Peninsula (12th-13th centuries) stands both as a valuable and complex heritage. Apart from some general lines that determine compositional and symbolic features, the local context, the liturgy, the artists or workshops and the influence of some prestigious models have created a highly attractive scenario. It is important to note that some statues that are preserved separately today may well be, from a broader perspective, part of larger ensembles of liturgical furniture. At the same time, the number of studies on technical and material aspects involving interdisciplinary work has increased. One of the questions that concern scholars the most is the spread of typology and stylistic trends. The influence of metal and precious metal works on tempered polychromed must be assessed. Other times, the spread of modalities confined to an area might well obey cult and pilgrimage reasons. Not all works, however, strictly follow one modality or another. Another hypothesis deals with the importation of some objects.

The aim of this work is to study the importance of minority carrier transport in double barrier diodes (DBD). We propose a theoretical model capable to describe the photoluminescence properties observed in GaAs-Al0.35Ga0.65As double barrier diodes with the increase of temperature. In this model, we considered that the minority carries (holes) photocreated at the contact of the structure diffuse, drift and then tunnel to the well. To study the influence of previous transport mechanisms, we solved the continuity equation under the influence of an applied bias and an excitation laser light. The theoretical photocurrent and photoluminescence calculations agree quite well with the experimental observations. Within the approaches of our model, we are able to simulate the minority holes mobility from the photocurrent measurements suggesting the use of the experimental technique as a probe of the carrier mobility.