Towards a better understanding of silicon heterojunction solar cells

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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

Advanced Modeling and Simulation of Luminescence Phenomena in Perovskite Semiconductors

Simon Jérôme Zeder

The utilization of MHPs in optoelectronics has surged over the past decade due to their favorable properties such as direct band gaps, a large JDOS near the band edge resulting in strong optical absorption, and high defect tolerance allowing operation clos ...

EPFL2024

Passivating contact-based tunnel junction Si solar cells using machine learning for tandem cell applications

Christophe Ballif, Franz-Josef Haug, Aïcha Hessler-Wyser, Audrey Marie Isabelle Morisset

Tandem solar cells are a key technology for exceeding the theoretical efficiency limit of single-junction cells. One of the most promising combinations is the silicon-perovskite tandem cells, considering their potential for high efficiency, fabrication on ...

ELSEVIER2023

Next-generation applications for integrated perovskite solar cells

Mohammad Khaja Nazeeruddin

Organic/inorganic metal halide perovskites attract substantial attention as key materials for next-generation photovoltaic technologies due to their potential for low cost, high performance, and solution processability. The unique properties of perovskites ...

SPRINGERNATURE2023

Combined Vacuum Evaporation and Solution Process for High-Efficiency Large-Area Perovskite Solar Cells with Exceptional Reproducibility

Michael Graetzel

Organic-inorganic hybrid perovskites exhibit outstanding performances in perovskite solar cells (PSCs). However, the complex solution chemistry of perovskites precursors renders it difficult to prepare large-area devices in a reproducible way, which is a p ...

Wiley-V C H Verlag Gmbh2023

Passivating Defects of Perovskite Solar Cells with Functional Donor-Acceptor-Donor Type Hole Transporting Materials

Mohammad Khaja Nazeeruddin, Yi Zhang, Kasparas Rakstys, Jianxing Xia

In this study, a series of donor-acceptor-donor (D-A-D) type small molecules based on the fluorene and diphenylethenyl enamine units, which are distinguished by different acceptors, as holetransporting materials (HTMs) for perovskite solar cells is present ...

WILEY-V C H VERLAG GMBH2023

Nonclassical Nucleation and Crystallization of LiNbO3 Nanoparticles from the Aqueous Solvothermal Alkoxide Route

Sandrine Gerber, Aurélien Bornet, Adrian Stefan Gheata

The exact molecular reaction pathway and crystallization mechanisms of LiNbO3 nanoparticles under solvothermal conditions are derived through extensive time- and temperature-resolved experiments allowing to track all the transient molecular and solid speci ...

Wiley-V C H Verlag Gmbh2023

Thermally controlled growth of photoactive FAPbI(3) films for highly stable perovskite solar cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Cyril Cayron, Felix Thomas Eickemeyer, Pascal Alexander Schouwink, Sandy Sanchez Alonso

We employ flash infrared annealing to investigate the phase transition of formamidinium lead triiodide (FAPbI(3)) thin films for their solar cell applications. Measuring the enthalpy changes of the FAPbI(3) composition at different heating rates allows us ...

ROYAL SOC CHEMISTRY2022

Single-crystalline TiO2 nanoparticles for stable and efficient perovskite modules

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Hiroyuki Kanda, Bin Ding, Wen Luo, Yong Ding, Keith Gregory Brooks, Valentin Ianis Emmanuel Queloz, Yen-Cheng Liu

The incorporation of electron transport layers based on single-crystalline TiO2 rhombohedral nanoparticles enables the realization of stable and efficient large-area perovskite solar cell modules. ...

Nature Portfolio2022

Device Performance of Emerging Photovoltaic Materials (Version 3)

Mohammad Khaja Nazeeruddin

Following the 2nd release of the "Emerging PV reports," the best achievements in the performance of emerging photovoltaic devices in diverse emerging photovoltaic research subjects are summarized, as reported in peer-reviewed articles in academic journals ...

WILEY-V C H VERLAG GMBH2022

Critical Role of Removing Impurities in Nickel Oxide on High-Efficiency and Long-Term Stability of Inverted Perovskite Solar Cells

Ulf Anders Hagfeldt

The performance enhancement of inverted perovskite solar cells applying nickel oxide (NiOx) as the hole transport layer (HTL) has been limited by impurity ions (such as nitrate ions). Herein, we have proposed a strategy to obtain high-quality NiOx nanopart ...

Wiley-VCH Verlag GmbH2022

Modulating the Electron Transporting Properties of Subphthalocyanines for Inverted Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Hiroyuki Kanda, Maria Cristina Momblona Rincón

The lack of organic non-fullerene ETMs with good electron transport and device stability is an important problem for the further development and commercialization of perovskite solar cells. Herein, the use of SubPcs as ETMs in PSCs is explored. To this end ...

FRONTIERS MEDIA SA2022