Mohammad Khaja Nazeeruddin

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Dopant-free hole transporting materials (HTMs) is significant to the stability of perovskite solar cells (PSCs). Here, we developed a novel star-shape arylamine HTM, termed Py-DB, with a pyrene core and carbon-carbon double bonds as the bridge units. Compa ...

We report a series of cobalt complexes with various polypyridyl ligands, where the oxidation potential is tuned from 0.17 to 0.34 V vs. ferrocene. The highest occupied molecular orbitals (HOMO) of the cobalt complexes were stabilized by adding electron acc ...

The integration of thin 2D perovskite layers at the 3D PVK/HTL interface is known to improve the power conversion efficiency and stability of perovskite solar cells (PSCs). In this work, we report a novel approach consisting of mixing two alkyl-based catio ...

Two ruthenium sensitizers TT-230 and TT-232 based on cyclopenta[2,1-b:3,4-b']dithiophene (CDT) were tested in dye-sensitized solar cells (DSSCs) using,a tri-iodide/iodide redox couple, and their performances compared to the benchmark Z907. Both dyes of gen ...

All-perovskite tandem solar cells recently surpassed 26% power conversion efficiency using a Sn(ii)-based halide perovskite rear subcell, which introduces several issues related to the chemical instability and the effectiveness of common, inexpensive inter ...

We prepared a quasi-solid electrolyte for dye-sensitized solar cells (DSSCs) that consist of ionic liquid and modified silica particles. Commercial bare silica F5 particles and modified silica F5 by NH2 and NH3+ groups were prepared, and fully characterize ...

Intercalated and unmodified TiS2 nanomaterials were synthesized and characterized by UV-Visible-NIR spectroscopy, Powder X-Ray Diffraction, and X-Ray Photoelectron and Ultraviolet Photoelectron Spectroscopy. Photoelectron spectroscopy measurements indicate ...

Organo-metal halide perovskite field-effect transistors present serious challenges in terms of device stability and hysteresis in the current-voltage characteristics. Migration of ions located at grain boundaries and surface defects in the perovskite film ...

To solve the toxicity issues related to lead-based halide perovskitesolar cells, the lead-free double halide perovskite Cs2AgBiBr6 is proposed. However, reduced rate of charge transferin double perovskites affects optoelectronic performance. We designeda s ...

Finely tuned: A stable dye-sensitized solar cell that contains a molecularly engineered org. dye was prepd. The efficiency of the cell remains at 90% after 1000 h of light soaking at 60°. The remarkable stability of the cell is also reflected in the open-c ...

This work explains the synthesis of an efficient organic hole transporting material based on 4,4'-(5,5'-(thiazolo [5,4-d] thiazole-2,5-diyl) bis(furan-5,2-diyl)) bis(N, N-diphenylaniline) (TP-FTzF-TP) and the replacement of poly (3,4-ethylenedio-xythiophen ...

An optimized unsymmetrical squaraine dye 5-carboxy-2[[3-[(2,3-dihydro-1, 1-dimethyl-3-ethyl-1H-benzo[e]indol-2-ylidene)methyl]-2-hydroxy-4-oxo-2-cyclobuten-1-ylidene]methyl]-3,3-dimethyl-1-octyl-3H-indolium (SQ02) with carboxylic acid as anchoring group is ...

To attain commercial viability, perovskite solar cells (PSCs) have to be reasonably priced, highly efficient, and stable for a long period of time. Although a new record of a certified power conversion efficiency (PCE) value over 25% was achieved, PSC perf ...

In n‐i‐p planar perovskite solar cells (PSCs), the electron transport layer (ETL) and the hole transporting layer play a crucial role in realizing high power conversion efficiency (PCE). Herein, a TiO2‐SDBA‐SnO2 stacked ETL is reported, where 4,4′‐sulfonyl ...

Approaches to boost the efficiency and stability of perovskite solar cells often address one singular problem in a specific device configuration. In this work, we utilize a poly(ionic liquid) (PIL) to introduce a multi-functional interlayer to improve the ...

Ti3C2Tx MXenes have been shown to be promising candidates for use in various applications. Herein, we prepare functionalized Ti3C2Tx MXene nanosheets doped with cesium (Cs) and introduce them into a lead iodide (PbI2) precursor solution for perovskite sola ...

Spiro-type molecules have been extensively explored as hole-transporting materials (HTMs) in perovskite solar cells (PSCs). However, a closer look at the rule of design of such molecules is missing, and a combined experimental and theoretical study is need ...

Perovskite solar cells have reached power conversion efficiencies exceeding 26.95% in single-junction devices and 34.85% in silicon/perovskite tandems, but stability remains a major barrier to commercialization. Here, we report machine learning and large language model (LLM)-based frameworks for analyzing open-access perovskite datasets to address both efficiency and stability challenges. Classical regression models and LLMs are combined to evaluate different data representations, embedding strategies, and

Perovskite solar cells have seen impressive progress in performance and stability, yet maintaining efficiency while scaling area remains a challenge. Here we find that additives commonly used to passivate large-area perovskite films often co-precipitate du ...

Surpassing the Shockley‐Queisser (S‐Q) limit to realize photovoltaic efficiencies that significantly exceed those of traditional silicon solar cells (SSCs) remains a fundamental aspiration within the solar energy research community. The advent of multi‐junction tandem cells presents a highly promising strategy to achieve this ambitious goal. Owing to their adjustable bandgaps and exceptional power conversion efficiencies (PCEs), perovskite solar cells (PSCs) have emerged as leading candidates for the top ce

Mohammad Khaja Nazeeruddin

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Dopant-Free Pyrene-Based Hole Transporting Material Enables Efficient and Stable Perovskite Solar Cells

A new generation of platinum and iodine free efficient dye-sensitized solar cells

Mixed cation 2D perovskite: a novel approach for enhanced perovskite solar cell stability

Cyclopentadithiophene-functionalized Ru(II)-bipyridine sensitizers for dye-sensitized solar cells

All-inorganic halide perovskites for air-processed "n-i-p" monolithic perovskite/organic hybrid tandem solar cells exceeding 23% efficiency

Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte

Intercalation makes the difference with TiS2: Boosting electrocatalytic water oxidation activity through Co intercalation

A hysteresis-free perovskite transistor with exceptional stability through molecular cross-linking and amine-based surface passivation

Molecular Tailoring of Pyridine Core-Based Hole Selective Layer for Lead Free Double Perovskite Solar Cells Fabrication

A Light-Resistant Organic Sensitizer for Solar-Cell Applications

Stable perovskite solar cells using thiazolo [5,4-d]thiazole-core containing hole transporting material

Molecular Design of Unsymmetrical Squaraine Dyes for High Efficiency Conversion of Low Energy Photons into Electrons Using TiO2 Nanocrystalline Films

Cut from the Same Cloth: Enamine-Derived Spirobifluorenes as Hole Transporters for Perovskite Solar Cells

Active Passivation Charge Transport in n‐i‐p Perovskite Solar Cells Approaching 26% Efficiency

Bi-functional interfaces by poly(ionic liquid) treatment in efficient pin and nip perovskite solar cells

Cesium-doped Ti3C2Tx MXene for efficient and thermally stable perovskite solar cells

Molecular Electronic Study of Spiro-[cyclopenta[1,2-b:5,4-b ']dithiophene-4,9 '-fluorene] Derivatives: Route to Decent Hole-Transporting Materials

Perovskite databases analysis using machine learning and large language models for prediction and reverse engineering

A thermotropic liquid crystal enables efficient and stable perovskite solar modules

Tandem Takeoff: Powering Tomorrow with Industrial‐Grade Perovskite/Silicon Solar Cells