Publication

Efficient and stable inverted perovskite solar cells employing self-assembled hole-transporting monolayers with enhanced interface interaction

Mohammad Khaja Nazeeruddin
2026

Abstract

Molecular tailoring of self-assembled hole-transporting monolayers (SAMs) has been proven as an efficient approach for improving the device performance of inverted perovskite solar cells. Herein, a novel SAM with extended conjugation is designed and synthesized, named NaPh-4PACz. Compared to Ph-4PACz, NaPh-4PACz exhibits a larger adsorption energy with the ITO substrate, enabling the formation of a more uniform and dense film, thereby preventing direct contact between the perovskite and ITO. Additionally, NaPh-4PACz also has a stronger interaction with the perovskite, which can reduce buried interface defects and suppress non-radiative recombination. Consequently, NaPh-4PACz-based devices achieved a power conversion efficiency of 25.48 % due to their interfacial “adhesive” ability. Importantly, the stability of the NaPh-4PACz-based devices was significantly improved.

Official source

https://infoscience.epfl.ch/entities/publication/207c903f-6ff8-42b8-9420-cb09e7d41b47

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Mohammad Khaja Nazeeruddin
2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/207c903f-6ff8-42b8-9420-cb09e7d41b47

About this result

Related concepts (32)

Perovskite solar cell

A perovskite solar cell (PSC) is a type of solar cell that includes a perovskite-structured compound, most commonly a hybrid organic–inorganic lead or tin halide-based material as the light-harvesting active layer. Perovskite materials, such as methylammonium lead halides and all-inorganic cesium lead halide, are cheap to produce and simple to manufacture. Solar-cell efficiencies of laboratory-scale devices using these materials have increased from 3.8% in 2009 to 25.

Solar cell

A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical phenomenon. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as solar panels.

Timeline of solar cells

In the 19th century, it was observed that the sunlight striking certain materials generates detectable electric current – the photoelectric effect. This discovery laid the foundation for solar cells. Solar cells have gone on to be used in many applications. They have historically been used in situations where electrical power from the grid was unavailable. As the invention was brought out it made solar cells as a prominent utilization for power generation for satellites.

Related publications (32)

Efficient and stable inverted perovskite solar cells employing self-assembled hole-transporting monolayers with enhanced interface interaction

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