660 / 2019-04-24 22:01:26

Metal particle dispersion structure improves absorption rate of thin film solar cells

thin film solar cells, nanoparticle, LSPR, absorption rate

全体主题 > 纳米传热、纳米流体流动和纳米材料

In order to improve the absorption rate of polycrystalline silicon thin film cells, an inverted pyramid structure was constructed and the metal nanoparticles were dispersed in the inverted pyramid structure. The absorption rate of the designed composite structure was improved by utilizing the LSPR effect generated by the metal particles, and the change of the absorption rate under different conditions was studied by changing the type, volume fraction and H/P ratio of the periodic structure in the composite structure. By using FDTD software to simulate, this paper finds that the designed inverted pyramid structure has a maximum absorption rate of 20% in the 0.4~0.55um band. In the composite structure, the dispersed Ag nanoparticles have the best absorption rate in the 0.55~0.8um band; The volume fraction of the particles in the inverted pyramid structure is found to increase slowly with the increase of volume fraction in a certain band. By changing the ratio of the depth of the inverted pyramid structure to the length of the period, it is found that as the ratio increases, the whole absorption rate will increase to some extent.