Mohammad Khaja Nazeeruddin

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Perovskite solar cells have disrupted the PV technology space with impressive power conversion efficiencies in the last decade. Given the solution-phase processability, band-gap tunability, and low energy intensity of production, many fabrication techniques and cell architectures have been explored to manufacture these cells and modules. However, the design space for these third-generation PVs is highly complex coupled with uncertainty regarding their lifetimes and efficiencies which requires a more detaile

Conventional dye-sensitized solar cells have excellent charge collection efficiencies, high open-circuit voltages and good fill factors. However, dye-sensitized solar cells do not completely absorb all of the photons from the visible and near-infrared doma ...

Energy-saving buildings (ESBs) are an emerging green technology that can significantly reduce building-associated cooling and heating energy consumption, catering to the desire for carbon neutrality and sustainable development of society. Smart photovoltaic windows (SPWs) offer a promising platform for designing ESBs because they present the capability to regulate and harness solar energy. With frequent outbreaks of extreme weather all over the world, the achievement of exceptional energy-saving effect unde

Metal-halide perovskites are optoelectronic materials applied to solar cells as a light absorber due to their excellent optoelectronic properties. The power conversion efficiency of perovskite solar cells (PSCs) reaches 25.7% certified, which stands in com ...

The power conversion efficiency of perovskite solar cells is drastically affected by photocarrier dynamics at the interfaces. Experimental measurements show quenching of the photoluminescence (PL) signal from the perovskite layer when it is capped with a h ...

We demonstrate low-temperature (70 degrees C) solution processing of TiO2/CH3NH3PbI3 based solar cells, resulting in impressive power conversion efficiency (PCE) of 13.7%. Along with the high efficiency, a strikingly high open circuit potential (V-OC) of 1 ...

A novel thiocyanate-free cyclometalated ruthenium sensitizer for solar cells is designed and developed. Upon anchoring to nanocrystalline TiO2 films, it exhibits a remarkable incident monochromatic photon-to-current conversion efficiency of 83%. The solar ...

Perovskite solar modules (PSMs) show outstanding power conversion efficiencies (PCEs), but long-term operational stability remains problematic. We show that incorporating N,N-dimethylmethyleneiminium chloride into the perovskite precursor solution formed d ...

Here, we report photonic nanostructures replicated from the adaxial epidermis of flower petals onto light-polymerized coatings using low-cost nanoimprint lithography at ambient temperature. These multifunctional nanocoatings are applied to confer enhanced ...

Mechanical residual stresses within multilayer thin-film device stacks become problematic during thermal changes because of differing thermal expansion and contraction of the various layers. Thin-film photovoltaic (PV) devices are a prime example where thi ...

Regeneration and recombination kinetics was investigated for dye-sensitized solar cells (DSCs) using a series of different cobalt polypyridine redox couples, with redox potentials ranging between 0.34 and 1.20 V vs. NHE. Marcus theory was applied to explai ...

In this work, a series of passivating salts for perovskite solar cells (PSCs) based on ortho-methylammonium iodide functional units are molecularly engineered to study the steric hindrance driven passivation effect. The incorporation of fluorine atoms into ...

We report stable perovskite solar cells having 3D/2D perovskite absorber layers and CuSCN as an inorganic hole transporting material (HTM). (Phenylethyl)ammonium (PEA) and [(4-fluorophenyl)ethyl]ammonium (FPEA) have been chosen as 2D cations, creating thin ...

The influence of interface modification of sensitized TiO2 surfaces by co-adsorbents on photovoltaic performance is detailed. We investigated different functional groups of co-adsorbents, such as carboxylic (4-guanidino butyric acid, chenodeoxycholic acid) ...

Tetraphenylethene (TPE) is a classic structural motif frequently incorporated into materials for optoelectronic devices due to its structural versatility. However, when used in perovskite solar cells, these TPE‐based layers exhibit suboptimal interfacial compatibility, leading to inefficient charge carrier extraction and reduced device stability. To address these issues, we have introduced hydrophobic fluorinated phenyl groups onto the TPE structure, electron transport interfacial materials, such as 1,1,2,2

A series of cationic iridium(III) complexes with two carbene-based cyclometalating ligands and five different NN bipyridine and 1,10-phenanthroline ancillary ligands is presented. For the first time in the frame of a rarely studied class of bis(heterole ...

Suppression of energy disorders in the vertical direction of a photovoltaic device, along which charge carriers are forced to travel, has been extensively studied to reduce unproductive charge recombination and thus achieve high-efficiency perovskite solar ...

Perovskite solar cells have driven a paradigm shift in the research domain of photovoltaics. Although the field has progressed tremendously, device stability holds back further progress and application to the market. In this work, we aim to gain insights i ...

Metal‐organic frameworks (MOFs) featuring high densities of selective metal binding sites represent promising materials for the extraction of toxic metal ions from liquids. This study presents a Zr‐MOF containing accessible thiol functionalities that demonstrates exceptional adsorption capacity and recyclability for the capture of lead(II) ions (Pb(II)). Structural characterization via Pair Distribution Function (PDF) and Powder X‐ray diffraction (PXRD) analyses revealed well‐defined Zr‐clusters interconnec

SnO2-based electron transport layers (ETLs) offer outstanding band alignment, excellent chemical and UV stability, high transmittance, high conductivity, and processability at low temperatures. However, unfortunately, the state-of-the-art SnO2 colloid prec ...

Mohammad Khaja Nazeeruddin

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Techno-economic analysis framework for perovskite solar module production at various manufacturing capacities

Increased light harvesting in dye-sensitized solar cells with energy relay dyes

Tri-Band Regulation and Split-Type Smart Photovoltaic Windows for Thermal Modulation of Energy-Saving Buildings in All-Season

Superhalogen Passivation for Efficient and Stable Perovskite Solar Cells

Analysis of Photocarrier Dynamics at Interfaces in Perovskite Solar Cells by Time-Resolved Photoluminescence

Nanocrystalline Rutile Electron Extraction Layer Enables Low-Temperature Solution Processed Perovskite Photovoltaics with 13.7% Efficiency

Cyclometalated Ruthenium Dyes for DSSC

Cation reactivity inhibits perovskite degradation in efficient and stable solar modules

Photonic nanostructures mimicking floral epidermis for perovskite solar cells

Stress Engineering for Mitigating Thermal Cycling Fatigue in Perovskite Photovoltaics

Regeneration and recombination kinetics in cobalt polypyridine based dye-sensitized solar cells, explained using Marcus theory

Steric hindrance driven passivating cations for stable perovskite solar cells with an efficiency over 24%

CuSCN as Hole Transport Material with 3D/2D Perovskite Solar Cells

Investigation on the Interface Modification of TiO2 Surfaces by Functional Co-Adsorbents for High-Efficiency Dye-Sensitized Solar Cells

Peripherally Fluorinated Tetraphenylethene: New Electron Extraction Interlayers for n‐i‐p Perovskite Solar Cells

Cationic Iridium(III) Complexes with Two Carbene-Based Cyclometalating Ligands: Cis Versus Trans Isomers

Micro-homogeneity of lateral energy landscapes governs the performance in perovskite solar cells

SnO2/TiO2 Electron Transporting Bilayers: A Route to Light Stable Perovskite Solar Cells

Efficient, Reversible Lead Adsorption in a Thiol‐Decorated Zirconium‐Metal–Organic Framework

In-situ peptization of WO3 in alkaline SnO2 colloid for stable perovskite solar cells with record fill-factor approaching the shockley-queisser limit