Publications de Mahmoud Saeed Qaid Mohammad Hezam

Synthesis of Pure Brookite Nanorods in a Nonaqueous Growth Environment

Mohammad Khaja Nazeeruddin, Mahmoud Saeed Qaid Mohammad Hezam

Brookite TiO2 is the most difficult TiO2 polymorph to synthesize. The available methods in the literature to produce brookite nanostructures mostly use water-based techniques for the preparation of water-soluble Ti complexes first, followed by a hydrotherm ...

2019

Charge Carrier Dynamics in Organo Lead Halide Perovskites

Mahmoud Saeed Qaid Mohammad Hezam

In the last five years, organo lead halide perovskites have emerged as a new and efficient player in the field of photovoltaics, jumping in a short time to an advanced front position. This class of materials has also shown proficient light emission capabil ...

EPFL2017

Photovoltaic and Amplified Spontaneous Emission Studies of High-Quality Formamidinium Lead Bromide Perovskite Films

Mohammad Khaja Nazeeruddin, Neha Arora, Benoît Marie Joseph Deveaud, Wolfgang Richard Tress, Peng Gao, Mohammad Ibrahim Dar, Thomas Moehl, Gwénolé Jean Jacopin, Mahmoud Saeed Qaid Mohammad Hezam

This study demonstrates the formation of extremely smooth and uniform formamidinium lead bromide (CH(NH2)(2)PbBr3 = FAPbBr(3)) films using an optimum mixture of dimethyl sulfoxide and N,N-dimethylformamide solvents. Surface morphology and phase purity of t ...

Wiley-Blackwell2016

Laser induced photocurrent and photovoltage transient measurements of dye-sensitized solar cells based on TiO2 nanosheets and TiO2 nanoparticles

Mahmoud Saeed Qaid Mohammad Hezam

Dye-sensitized solar cells (DSSCs) based on TiO2 nanoparticles and TiO2 nanosheets with exposed {001} facets are investigated using laser-induced photovoltage and photocurrent transient decay (LIPVCD) measurements. We adopted a simplified version of LIPVCD ...

Pergamon-Elsevier Science Ltd2016

Invoking the frequency dependence in square modulated light intensity techniques for the measurement of electron time constants in dye-sensitized solar cells

Mahmoud Saeed Qaid Mohammad Hezam

Dye-sensitized solar cells (DSSCs) have been considered as one of the most promising new generation solar cells. Enormous research efforts have been invested to improve the efficiency of solar energy conversion which is determined by the light harvesting e ...

Spie-Int Soc Optical Engineering2015