Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
With increasing concerns on possible energy crisis, solar energy is considered an important alternative for conventional fossil energy. The perovskite solar cell (PSC) is one of the most promising photovoltaic technology in recent years owing to its >20% power conversion efficiency. In this presentation, we investigate the effect of niobium (Nb) doping on the electronic and photovoltaic properties of mesoporous TiO2 film in the PSC. Based on the experience and knowledge gained in dye-sensitized solar cell, the intrinsic conductivity and charge recombination of Nb-doped TiO2 are both increased, leading to a dramatic change in photovoltaic performance in DSSC. In this work, we studied the electronic structure of TiO2 semiconductor with Nb doping and the photovoltaic properties of PSC. Interestingly, we found the hysteresis was reduced in Nb-doped mesoporous TiO2 PSC, and the conversion efficiency was improved from 11.11% to 12.13% (shown in Figure 1). Explanations are proposed to verify the effect of Nb-doping in mesoporous TiO2 film.
Figure 1, J-V curves of pure (left) and Nb-doped (right) TiO2 based perovskite solar cells
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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