Publications associées à The influence of microstructure on charge separation dynamics in organic bulk heterojunction materials for solar cell applications

Publications associées (44)

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

Mohammad Khaja Nazeeruddin, Yong Ding, Kai Zhang

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

Solar photons beyond the band gap wavelengths: their effect on solution-processed solar cells

Michael Graetzel

A deep understanding of how solution-processed solar cells (SSCs) perform under varying temperatures and irradiance is crucial for their optimal design, synthesis, and use. However, current partial spectral characterization, primarily below the band gap wa ...

Royal Society of Chemistry2025

Texture-enhanced Mechanical Stability of Transparent Electrodes for Flexible Optoelectronics with Near-infrared Response

Simon Baptiste Rieckhoff

Transparent electrodes with high conductivity and mechanical robustness are essential for flexible opto-electronic applications. Indium tin oxide (ITO) single layers have long been considered as unsuitable for flexible applications due to their brittleness ...

WILEY2025

Optical assessment of lignin-containing nanocellulose films under extended sunlight exposure

Tiffany Abitbol

This study investigates the stability and UV-blocking properties of cellulose nanofibril (CNF) and TEMPO-oxidized cellulose nanofibril (TOCNF) films, with and without lignin, under 1000 h of artificial sunlight. The literature to date provides no quantitat ...

SPRINGER2025

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

Valence and Site Engineering Enable Efficient Broadband Near‐Infrared Emission at 960 nm in Cr3+‐Activated Forsterite

Jean-Claude Bünzli

Near‐infrared (NIR) light sources hold great potential for applications in night vision illumination, bio‐imaging, and non‐destructive testing. However, radiationless de‐activation and low absorption restrict the development of high‐efficiency blue light e ...

Wiley2025

Realizing Uniform Defect Passivation via Self‐Polymerization of Benzenesulfonate Molecules in Perovskite Photovoltaics

Michael Graetzel, Likai Zheng, Mingyang Wei, Xiaoqing Jiang

Realizing high‐quality perovskite films through uniform defect passivation and crystallization control is pivotal to unlocking the potential of scalable applications. However, prevalent small‐molecule additives are inherently susceptible to the crystalliza ...

Wiley2025

Metal Doping of Strongly Confined Halide Perovskite Nanocrystals under Ambient Conditions

Emad Oveisi, Aurélien Bornet, Pascal Alexander Schouwink, Sascha Feldmann, Tejas Deshpande, Zachary Andrew Vanorman

Halide perovskite nanocrystals are promising materials for optoelectronic applications. Metal doping provides an avenue to boost their performance further, e.g., by enhancing light emission, or to provide additional functionalities, such as nanoscale magne ...

American Chemical Society (ACS)2025

C-ald-grown Metal Oxide Shell Enables Distance-independent Triplet Energy Transfer From Quantum Dots to Molecular Dyes

Marco Fabbiano, Raffaella Buonsanti, Sascha Feldmann, Ona Segura Lecina, Tejas Deshpande

Hybrid nanocomposites including quantum dots (QDs) and molecular dyes offer tunability of charge and energy transfer processes, which are attractive for applications spanning from light-emitting devices to photocatalysis and photon upconversion. Core@shell ...

AMER CHEMICAL SOC2025

Spin polarization detection via chirality-induced tunnelling currents in indium selenide

Shun Feng, Andras Kis, Gabriele Pasquale, Eloi Régis L Collette

Chirality, a basic property of symmetry breaking, is crucial for fields such as biology and physics. Recent advances in the study of chiral systems have stimulated interest in the discovery of symmetry-breaking states that enable exotic phenomena such as s ...

Springer Science and Business Media LLC2025

Towards Quantitative Terahertz Characterisation of Zinc Phosphide Thin Films for Photovoltaic Applications

Anna Fontcuberta i Morral, Jean-Baptiste Leran, Simon Robert Escobar Steinvall, Elias Zsolt Stutz, Rajrupa Paul, Mirjana Dimitrievska, Léa Buswell

The earth-abundant and non-toxic material Zinc phosphide (Zn3P2) is a promising candidate for solar cell applications. However, growth of defect-free, high-quality thin films on substrates that can integrate with current technology (e.g. silicon) remains c ...

IEEE Computer Society2024

Durable Perovskite Solar Cells with 24.5% Average Efficiency: The Role of Rigid Conjugated Core in Molecular Semiconductors

Michael Graetzel, Shaik Mohammed Zakeeruddin, Peng Wang, Felix Thomas Eickemeyer

Efficient and robust n-i-p perovskite solar cells necessitate superior organic hole-transport materials with both mechanical and electronic prowess. Deciphering the structure-property relationship of these materials is crucial for practical perovskite sola ...

Wiley-V C H Verlag Gmbh2024

Photo-doping of spiro-OMeTAD for highly stable and efficient perovskite solar cells

Michael Graetzel, Jacques-Edouard Moser, Etienne Christophe Socie, George Cameron Fish, Aaron Tomas Terpstra, Kai Zhu

A widely used component of high-efficiency perovskite solar cells (PSCs) is the molecular hole-transport material (HTM) spiro-OMeTAD. This organic solid needs to be p-doped to acquire sufficient hole conductivity. However, the conventional doping method us ...

2024

Triarylamine Trisamide Interfacial Modulation for Perovskite Photovoltaics

Runzhong Zhang, Michael Graetzel, Shaik Mohammed Zakeeruddin, Felix Thomas Eickemeyer, Ghewa Alsabeh

Hybrid perovskites stand out as one of the leading materials in the new generation of photovoltaics. Their stability under operating conditions, however, remains an ongoing challenge. In particular, aging at the interface with the charge transport material ...

Wiley2024

Supramolecular interactions using β-cyclodextrin in controlling perovskite solar cell performance

Parnian Ferdowsi, Kevin Sivula, Jun Ho Yum, Jiyoun Seo

In the context of perovskite solar cells (PSCs), enhancing device performance often involves adding a small excess of lead iodide (PbI2) to the precursor solution. However, the presence of unreacted PbI2 can lead to accelerated degradation compromising lon ...

Royal Society of Chemistry2024

Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal-halide perovskites

Anaël Morgane Jaffrès, Christophe Ballif, Quentin Thomas Jeangros, Aïcha Hessler-Wyser, Christian Michael Wolff, Mostafa Rabie Shlaly Bahr Othman, Daniel Anthony Jacobs, Austin George Kuba

The technique of alloying FA+ with Cs+ is often used to promote structural stabilization of the desirable alpha-FAPbI3 phase in halide perovskite devices. However, the precise mechanisms by which these alloying approaches improve the optoelectronic quality ...

Royal Soc Chemistry2024

Assessing the Influence of Illumination on Ion Conductivity in Perovskite Solar Cells

Christophe Ballif, Aïcha Hessler-Wyser, Christian Michael Wolff, Mostafa Rabie Shlaly Bahr Othman

Whether illumination influences the ion conductivity in lead-halide perovskite solar cells containing iodide halides has been an ongoing debate. Experiments to elucidate the presence of a photoconductive effect require special devices or measurement techni ...

2024

Supramolecular Modulation for Hybrid Perovskite Photovoltaics

Michael Graetzel, Shaik Mohammed Zakeeruddin, Felix Thomas Eickemeyer, Hong Zhang, Jovana Milic, Ghewa Alsabeh, Masaud Hassan S Almalki

Hybrid perovskites are emerging as top contenders in the next generation of photovoltaics, yet their stability under operational conditions remains a significant challenge. Specifically, degradation occurs at the interface with charge transport layers in p ...

2024

A thermotropic liquid crystal enables efficient and stable perovskite solar modules

Mohammad Khaja Nazeeruddin, Bin Ding, Yong Ding

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 ...

Nature Portfolio2024

Microstructural and electrical characterization of high temperature passivating contacts for silicon solar cells

Sofia Libraro

Recombination at metal/semiconductor interfaces represents the main limitation in mainstream c-Si solar cells, primarily based on the passivated emitter and rear cell (PERC) concept. Full-area passivating contacts based on SiOx/poly-Si stacks are a candida ...

EPFL2024