Publications by Mohammad Khaja Nazeeruddin

Efficient Polycrystalline Single-Cation Perovskite Light-Emitting Diodes by Simultaneous Intracrystal and Interfacial Defect Passivation

Polycrystalline perovskite light-emitting diodes (PeLEDs) have shown great promise with high efficiency and easy processability. However, PeLEDs using single-cation polycrystalline perovskite emitters have demonstrated low efficiency due to defects within ...

2025

Tuning Electronic and Optical Properties of 2D/3D Interfaces of Hybrid Perovskites through Interfacial Charge Transfer: Prediction of Higher-Efficiency Interface Solar Cells Using Hybrid-DFT Methods

Mohammad Khaja Nazeeruddin

The 2D/3D or 2D/quasi-2D composite mixed-dimensional construction of hybrid perovskite interfaces is gaining increasing attention due to their enhanced stability toward degradation without compromising the corresponding solar cell efficiency. Much of this ...

AMER CHEMICAL SOC2025

High‐Efficiency Sn‐Pb Perovskite Solar Cells via Nucleation and Crystallization Control

Mohammad Khaja Nazeeruddin

The rapid crystallization of mixed tin‐lead (Sn‐Pb) perovskites and their dependence on antisolvent processes limit the development of large‐area Sn‐Pb perovskite solar cells (PSCs). Vacuum‐flash‐assisted solution processing (VASP) has emerged as a promisi ...

Wiley2025

Solubilizing and stabilizing C60 with n-type polymer enables efficient inverted perovskite solar cells

Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Jianxing Xia

Pristine fullerene C60 is currently the best-performing electron transport layer (ETL) for perovskite solar cells (PSCs) but suffers from significant aggregation in solution. Consequently, the high-cost and complex thermal evaporation method is typically u ...

2025

Facile and Low-Cost Design Alternative of Spiro-OMeTAD as p-Type Semiconductor for Efficient Perovskite Solar Cells

Mohammad Khaja Nazeeruddin

A simple diphenylamine-based hole transporting material V1553 was synthesized and incorporated into a perovskite solar cell, which showed remarkable power conversion efficiency close to 23%. The investigated HTM was synthesized via one-step catalyst-free c ...

WILEY-V C H VERLAG GMBH2025

Fluorene-Terminated π-Conjugated Spiro-Type Hole Transport Materials for Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Guixiang Li

Spiro-OMeTAD is a widely used hole transport material (HTM) in perovskite solar cells (PSCs), but its inherent low hole mobility and poor thermal stability affect the overall performance of PSCs. To overcome these limitations, we develop a series of fluore ...

AMER CHEMICAL SOC2025

Localized Tunneling 1D Perovskitoid Passivated Contacts for Efficient and Stable Perovskite Solar Modules

Mohammad Khaja Nazeeruddin, Yong Ding

Interface engineering has proven to be an effective approach for passivating interfacial imperfections to mitigate non-radiative recombination, but the subpar interface quality between the perovskite and the charge transport layer has hindered advancements ...

2025

Formation Dynamics of Thermally Stable 1D/3D Perovskite Interfaces for High-Performance Photovoltaics

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Zhaofu Fei

Direct understanding of the formation and crystallization of low-dimensional (LD) perovskites with varying dimensionalities employing the same bulky cations can offer insights into LD perovskites and their heterostructures with 3D perovskites. In this stud ...

Wiley2025

High-Efficiency Carbon Perovskite Solar Cells via Cathode Interface Engineering by using CuPc Hole-Transporting Layers

Mohammad Khaja Nazeeruddin

Carbon perovskite solar cells (C-PSCs) represent a promising photovoltaic (PV) technology that addresses the long-term operating stability needed to compete with commercial Si solar cells. However, the poor interface contacts between the carbon electrode a ...

2025

Impact of processing atmosphere on nanoscale properties of highly efficient Cs0.05MA0.05FA0.9PbI3 perovskite solar cells

Mohammad Khaja Nazeeruddin, Yong Ding

The fabrication process of triple-cation-halide organic inorganic perovskites must be tightly controlled to make high-efficiency solar cells. After precursor deposition, the amount of oxygen and moisture during the annealing process is important but not al ...

ROYAL SOC CHEMISTRY2025

Dopamine Dopes the Performance of Perovskite Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Paul Joseph Dyson, Ursula Röthlisberger, David Lyndon Emsley, Fatemeh Ansari, Felix Thomas Eickemeyer, Lukas Pfeifer, Nikolaos Lempesis, Virginia Carnevali, Ümmügülsüm Günes, Likai Zheng

The electron transport layer (ETL) is a crucial component of perovskite solar cells (PSCs) as it greatly influences their photovoltaic performance. Among various currently used ETL materials, SnO₂ stands out due to its unique advantages, including low‐temp ...

Wiley2025

Charge-Selective Contact Materials for Perovskite Solar Cells (PSCs)

Mohammad Khaja Nazeeruddin

This chapter attempts to give a systematic introduction about the choices of both electron- and hole-selective contact materials for efficient perovskite solar cells (PSCs). A huge number of hole-selective electron-blocking materials (HTMs) have been synth ...

Wiley2025

Innovating Carbon-based Perovskite Solar Cells: the Role of a Cn-anchoring Self-assembled Molecular Layer in Efficiency and Stability

Mohammad Khaja Nazeeruddin

The discovery of self-assembled molecular layers (SAMLs) containing anchoring groups such as COOH and PO3H as efficient hole-selective materials (HSMs) in p-i-n perovskite solar cells (PSCs) is pivotal to enhancing the interaction between HSMs and perovski ...

ROYAL SOC CHEMISTRY2025

Perovskite heteroepitaxy for high-efficiency and stable pure-red LEDs

Mohammad Khaja Nazeeruddin

Ultrasmall CsPbI3 perovskite quantum dots (QDs) are the most promising candidates for realizing efficient and stable pure-red perovskite light-emitting diodes (PeLEDs)1, 2, 3, 4–5. However, it is challenging for ultrasmall CsPbI3 QDs to retain their soluti ...

2025

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

Mohammad Khaja Nazeeruddin

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 ...

Wiley2025

Cation interdiffusion control for 2D/3D heterostructure formation and stabilization in inorganic perovskite solar modules

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Yong Ding, Xianfu Zhang

Inorganic perovskite solar cells could benefit from surface passivation using 2D/3D perovskite heterostructures. However, conventional spacer cations fail to exchange with the tightly bonded Cs cation in the inorganic perovskite to form 2D layers atop; or, ...

2025

P-Dopant with Spherical Anion for Stable n-i-p Perovskite Solar Cells

Mohammad Khaja Nazeeruddin

Li-TFSI/t-BP is the most widely utilized p-dopant for hole-transporting materials (HTMs) in state-of-the-art perovskite solar cells (PSCs). However, its nonuniformity of doping, along with the hygroscopicity and migration of dopants, results in the devices ...

Wiley-VCH Verlag GmbH2025

Defect Engineering and Crystallization Kinetics Control via Dual‐Functional Mercaptoacetamide for High‐Performance, Large‐Area Perovskite Solar Modules

Mohammad Khaja Nazeeruddin

Despite the rapid development of small‐area perovskite solar cells (PSCs), the performance limitations of large‐area perovskite solar modules (PSMs) hinder their commercialization. Uncontrolled crystallization kinetics and complex environmental factors in ...

Wiley2025

Resilience pathways for halide perovskite photovoltaics under temperature cycling

Mohammad Khaja Nazeeruddin, Guixiang Li

Metal-halide perovskite solar cells have achieved power conversion efficiencies comparable to those of silicon photovoltaic (PV) devices, approaching 27% for single-junction devices. The durability of the devices, however, lags far behind their performance ...

NATURE PORTFOLIO2025

Functionalized Phenyl Methanaminium Salts Provide Highly Stable Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Andreas Züttel, Liping Zhong

One of the leading approaches to enhancing the performance and stability of perovskite solar cells (PSCs) involves passivating the perovskite surface and grain boundaries with large ammonium salts. Here, we report the synthesis of furan-, thiophene-, and s ...

2025