Publications de Sadig Aghazada

Ionic dipolar switching hinders charge collection in perovskite solar cells with normal and inverted hysteresis

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Kyung Taek Cho, Sadig Aghazada, Tom Theodorus Antonius Lummen

Drift-diffusion modeling of the ionic dipole switching from the measurement of fast scanned and long pre-biased electrical response is proposed as a novel protocol for evaluation of limit hysteretic effects in perovskite solar cells. Up to eight systems we ...

2019

Lead and HTM Free Stable Two-Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Sadig Aghazada, Tom Theodorus Antonius Lummen

Organic-inorganic hybrid perovskites have attracted great attention over the last few years as potential light-harvesting materials for efficient and cost-effective solar cells. However, the use of lead iodide in state-of-the-art perovskite devices may dem ...

Wiley-VCH Verlag GmbH2019

Cyclometalated Ruthenium Complexes for Dye-Sensitized Solar Cells

Sadig Aghazada

The transition towards carbon-free sources of energy is vital for humankind. This process is feasible through the extensive use of photovoltaic technologies, which may convert solar energy into elec-trical and chemical energy. In the last half-century, man ...

EPFL2018

Bis-Tridentate-Cyclometalated Ruthenium Complexes with Extended Anchoring Ligand and Their Performance in Dye-Sensitized Solar Cells

Mohammad Khaja Nazeeruddin, Sadig Aghazada, Peng Wang, Iwan Zimmermann, Yameng Ren

2018

Discerning recombination mechanisms and ideality factors through impedance analysis of high-efficiency perovskite solar cells

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Kyung Taek Cho, Sadig Aghazada

Elsevier2018

Bis(arylimidazole) Iridium Picolinate Emitters and Preferential Dipole Orientation in Films

Mohammad Khaja Nazeeruddin, Natalia Gasilova, Pascal Alexander Schouwink, Iwan Zimmermann, Aron Joel Huckaba, Sadig Aghazada

2018

Ruthenium Complexes as Sensitizers in Dye-Sensitized Solar Cells

Mohammad Khaja Nazeeruddin, Sadig Aghazada

2018

Dye-sensitized solar cells using cobalt electrolytes: the influence of porosity and pore size to achieve high-efficiency

Mohammad Khaja Nazeeruddin, Aswani Yella, Pascal Comte, Sadig Aghazada, Simon Mathew

Diffusion impediments in redox shuttles are a major limitation to realizing high power conversion efficiencies (PCEs) in dye sensitized solar cells (DSCs) using cobalt complexes. Mass transport limitations are strongly dependent on the pore size and the po ...

Royal Society of Chemistry2017

Exploration of bis(arylimidazole) Iridium picolinate complexes

Mohammad Khaja Nazeeruddin, Giulia Grancini, Natalia Gasilova, Iwan Zimmermann, Aron Joel Huckaba, Sadig Aghazada

2017

Effect of Donor Groups on the Performance of Cyclometalated Ruthenium Sensitizers in Dye-Sensitized Solar Cells

Mohammad Khaja Nazeeruddin, Sadig Aghazada, Peng Wang, Yameng Ren

Three new tris-heteroleptic complexes of ruthenium(II) were designed by coordinating the metal center with cyclometalating, anchoring, and auxiliary ligands with different donor substituents. N-Hexylcarbazole, N-hexylphenothiazine, and N-hexyldiphenylamine ...

American Chemical Society2017