Doctoral Researchers
B14: Saghar Mohammad
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E-Mail: saghar.mohammad@tu-dresden.de My interest in solar cell research originates from the ongoing global quest for dependable and sustainable energy sources, which attracted me to this field even before starting my undergraduate education. My specific interest in perovskite photovoltaics, however, was sparked during a bachelor’s semester project focused on solar cell device synthesis, marking the beginning of a focused research fascination. An interest only further strengthened during my master’s studies, where I developed a solid foundation in both theoretical concepts and experimental techniques related to photovoltaics. At the same time, my Master’s program introduced me to the field of nanotechnology, particularly quantum dots, which quickly emerged as another area that I have found to be increasingly compelling. By converging these two scientific realms, this PhD program, in which I aim to fabricate solar cell devices based on perovskite nanocrystals, offers the best of both worlds. It provides specialized interdisciplinary training that not only aligns perfectly with my cultivated interests and experience but also allows me to further refine them. |
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Supervisors:
Mentor: Prof. Yana Vaynzof
Co-Mentor: Dr. Hendrik Schlicke
My doctoral project centres on the use of perovskite quantum dots as the absorber layer in solar cell devices. Perovskite crystals have become a major focus in photovoltaic research due to their exceptional intrinsic properties, such as strong optical absorption and long charge-carrier diffusion lengths, enabling high power conversion efficiencies. Colloidal nanocrystals of these materials offer additional advantages, including enhanced phase stability and precise bandgap tunability through control of quantum dot size.
In this project, I aim to integrate these nanocrystals into solar cells employing an inverted (p-i-n) architecture. This device configuration has been shown to reduce the characteristic hysteresis observed in conventional (n-i-p) perovskite solar cell structures, while also improving fill factors. This overarching goal to realize stable, high-efficiency inverted perovskite quantum dot solar cells however, is highly affected by every step of device fabrication and as such requires a comprehensive investigation of each step, ranging from synthesis protocols and film deposition techniques to the selection of suitable hole and electron transport layers.
| (2013 - 2019) |
Bachelor of Science Tehran University, Tehran, Iran
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| (2021 - 2025) |
Master of Science Technische Universität Chemnitz, Chemnitz, Germany
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| (2023- 2025) |
Research Assistant Leibniz-Institut für Festkörper- und Werkstoffforschung (IFW) Dresden |