Solar Energy Materials and Solar Cells, Vol.155, 294-322, 2016
Quantum dot sensitized solar cell: Recent advances and future perspectives in photoanode
Quantum dot (QD) has emerged as a promising agent in the field of solar energy conversion due to its distinct size-dependent optoelectronic characteristics. As next generation solar cell having facile and low cost fabrication techniques, quantum dot sensitized solar cell (QDSSC) has great potential to meet global demand for clean energy. In this type of solar cell architecture, high performance is expected due to multiple exciton generation effect and tuning of energy band gap in QD. As reported photo conversion efficiency of QDSSC is still less than dye sensitized solar cells, more research on optimization of material selection and material engineering is required. In this review paper, structure & working of QDSSC along with interfacial charge transportation mechanism is presented. Various fabrication techniques related to QDSSCs have been briefly described. This article focuses on recent advances in photoanode of QDSSC. It includes various aspects of photoanode such as structural, morphological effect, carbon related materials, doping effect in metal oxides, alternative photo-anodic materials, surface treatment, blocking layer, new types of sensitizer etc. Issues related to photoanode corrosion and stability are reviewed. Limitations and future prospects have been discussed to fabricate more efficient and stable quantum dot sensitized solar cell. (C) 2016 Elsevier B.V. All rights reserved.