Latest Stories

09 March, 2020

28.2% mechanically-stacked perovskite/silicon tandems

Mechanically stacked tandems still hold great potential. Check out our collaborative study with @Sargent_Group reporting lab-scale 28.2% perovskite/silicon tandems with 19% semitransparent top cells published in Nature Communications.

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05 March, 2020

Growing perovskite on textured silicon - check out KPV-LAB's recent study in Science Magazine

Our team in a collaboration with Sargent Group grew thick films of perovskite with a bandgap of ∼1.68 electron volts and used a passivant, 1-butanethiol, to limit its phase separation. The tandem cells had a certified power conversion efficiency of 25.7% and had negligible losses after 400 hours of operation.

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20 February, 2020

Farewell lunch for Alessandro

KPV-LAB people met at lunch to say goodbye to Alessandro and welcome Francesco Furlan.

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23 January, 2020

KPV-LAB announces several internship projects for 2020 - Apply now!

KPV-LAB offers students the chance to conduct innovative research at KAUST. With research opportunities that span the breadth of the photovoltaics field, driven students with an insatiable curiosity and strong academic performance can gain unparalleled opportunities to pursue their research questions under the guidance and support of KPV-LAB members.

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16 December, 2019

New year lunch

KPV-LAB people gathered for new year lunch. Happy new year to everyone!

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20 November, 2019

KPV-LAB members went to a snorkeling trip

The Red Sea is, in particular, one of the best snorkeling destinations in the world. KPV-LAB members are enjoying the beauties of the Red Sea.

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19 November, 2019

Prof. Stefaan De Wolf listed as Web of Science Highly Cited Researcher

Prof. Stefaan De Wolf is included in Web of Science’s Highly Cited Researchers 2019 annual list for the first time.

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22 October, 2019

KAUST Discovery highlights KPV-LAB's IZRO electrodes study

A touch of zirconium to better catch the sun: Zirconium-doped transparent electrodes boost the power conversion efficiency of perovskite-based tandem solar cells.

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17 October, 2019

Simone Sansoni joins KPV-LAB as a visiting PhD fellow from Padova University

At KPV-LAB Simone will focus on the optimization of spray coating deposition for perovskite-silicon tandem applications

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16 September, 2019

Dr. Thomas Allen and coworkers from KPV-LAB reviews passivating contacts for crystalline silicon solar cells in Nature Energy

​Recent breakthroughs in the way silicon solar cells can be made suggest the face of the industry-dominating technology could be changing. The new discoveries are outlined in a paper.

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05 September, 2019

​Dr. Erkan Aydin's technology review takes places in the last issue of KSC Newsletter

​Dr. Erkan Aydin's technology review on "Defect and Contact Passivation for Perovskite Solar Cells" takes places in the last issue of KSC Newsletter

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01 September, 2019

KPV-LAB members gathered at a dinner to say goodbye to interns and visitors

KPV-LAB members gathered at a dinner to say goodbye to interns and visitors.​ Francesco Furlan who is a VSRP intern, Jorge Avila Gomez who is a visiting scientist from the University of Valencia, and Salman Aboud and Rawan Jalmood are finalizing their visits.

In the meantime, we say welcome to our new VSRP interns Alessandro Mirabelli and Shingis Zhumagali.

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27 August, 2019

KAUST Discovery Magazine higlights the recent articles of KPV-LAB: Tiny tweaks for big wins in solar cells

Changes in the composition are shown to affect light-harvesting layer crystallization and perovskite solar cell efficiency.

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18 July, 2019

KPV-LAB hosts two summer school students for internship

​KPV-LAB hosts two summer school students for silicon solar activities​: Salman and Rawan.

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17 June, 2019

Dr. Kai Wang's in-situ GIWAXS study came out in Advanced Materials reveals the effective management of the anti-solvent quenching on mixed-halide/cation perovskite solar cells

The role of cation and halide mixing is revealed using in situ X‐ray scattering measurements during spin‐coating. Modulating the cation/halide composition directly impacts the lifetime of the sol–gel precursor film and its easy and reproducible conversion to the perovskite phase to yield solar cells with 20% power conversion efficiency.

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16 June, 2019

Jorge Avila from Prof. Henk Bolink's Group joins KPV-LAB as a visiting researcher. Welcome Jorge!

​Jorge Avila from Prof. Henk Bolink's Group joins KPV-LAB as a visiting researcher. Welcome Jorge!​

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11 June, 2019

Multi-cation Synergy Suppresses Phase Segregation in Mixed-Halide Perovskites. Check out KPV-LAB's recent paper in Joule!

  • Reveal phase segregation in mixed-halide perovskite films via in situ observation
  • Cs+ and Rb+ additions dictate the crystallization pathways and solar cell performance
  • Direct formation of perovskite phase is beneficial in minimizing halide segregation​​
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07 June, 2019

What should be done to reach terawatt-scale photovoltaics? Check out the recent Science paper Prof. Stefaan De Wolf contributed

This paper envision a future with ∼10 TW of PV by 2030 and 30 to 70 TW by 2050, providing a majority of global energy. PV would be not just a key contributor to electricity generation but also a central contributor to all segments of the global energy system. Ramifications and challenges for complementary technologies (e.g., energy storage, power to gas/liquid fuels/chemicals, grid integration, and multiple sector electrification) are discussed.

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26 May, 2019

Dr. Anand S. Subbiah joins KPV-LAB as a new member of perovskite team

Anand has recently moved to KAUST from India, joining Prof. Stefaan De Wolf’s group at KAUST Solar Center as a postdoctoral fellow.​​

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10 May, 2019

Dr. Kai Wang an coworkers reports improved contact quality of perovskite solar cells with "triarylphosphine oxide". Check out the paper in Adv. Mater. Int.

The small organic molecule (2‐(1,10‐phenanthrolin‐3‐yl)naphth‐6‐yl)diphenylphosphine oxide is explored as cathode interfacial material to reduce the extraction barrier between phenyl‐C61‐butyric acid methyl ester and Ag. With the better contact quality thanks to this molecule, both opaque and semitransparent p‐i‐n perovskite solar cell achieve improved performance and stability.

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08 May, 2019

Dr. Erkan Aydin, Dr. Michele De Bastiani and Prof. Stefaan De Wolf published a comprehensive review in Advanced Materials titled with "Defect and Contact Passivation for Perovskite Solar Cells"

​Dr. Erkan Aydin, Dr. Michele De Bastiani and Prof. Stefaan De Wolf reviewed "Defect and Contact Passivation for Perovskite Solar Cells" in Advanced Materials. This comprehensive review explains the origin of the various voltage‐limiting mechanisms in PSCs, and possible mitigation strategies with decent examples from literature.

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17 April, 2019

​Jingxuan Kang successfully defended his M.Sc. thesis. Congratulations!

​Jingxuan Kang succesfully defended his M.Sc. thesis. Cogratulations!

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16 April, 2019

Dr. Xinbo Yang and coworkers publish 20% c-Si devices with dual-function electron-conductive, hole-blocking TiN contacts

In this study, Xinbo Yang coworkers report an electron-conductive, hole-blocking contact based on titanium nitride (TiN) deposited by reactive magnetron sputtering.

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10 April, 2019

Dr. Erkan Aydin and coworkers report 26.2% PCE for 4T perovskite/silicon tandems enabled by IZRO electrodes in Advanced Functional Materials

​In this study, Dr. Erkan Aydin and coworkers show the excellent properties of Zr‐doped indium oxide (IZRO) transparent electrodes for such applications, with improved near‐infrared (NIR) response, compared to conventional tin‐doped indium oxide (ITO) electrodes, are shown. By doing so, the team is reporting 26.2% PCE for four‐terminal perovskite/silicon tandem devices with an absolute 3.5 mA cm−2 short‐circuit current improvement in silicon bottom cells.

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31 March, 2019

Francesco Furlan joins to KPV-LAB perovskite solar cells team as a VSRP student

​Francesco Furlan joins to KPV-LAB perovskite solar cells team as a VSRP student

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09 March, 2019

KPV-LAB researchers and coworkers from Czech Technical University just published in JPCL on "Temperature Dependence of the Urbach Energy in Lead Iodide Perovskites"

This study reveals the temperature dependence of absorption spectra for methylammonium lead iodide with specific attention for its sub-bandgap
absorption edge (often referred to as Urbach energy).

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08 March, 2019

A simple way to passivate the c-Si by polymeric Lewis acids: check out KPV-LAB's recent paper in ACS Nanо

​KPV-LAB researchers have recently published in ACS Nano with a collaboration of Javey Research Group at the University of California, Berkeley. ​​

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19 February, 2019

A recent paper from KPV-LAB: Metal-induced gap states in passivating metal/silicon contacts

​This study reports the first-principles calculations based on density functional theory to investigate the surface defect and metal-induced gap state density of silicon in close contact with metals (Al and Ag).

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10 February, 2019

KPV-LAB welcomes Yifan Dang as a visiting student in silicon solar cells team

​KPV-LAB welcomes Yifan Dang as a visiting student in silicon solar cells team.​

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24 November, 2018

Learn about the latest research results from KPV-LAB at the 2018 MRS Fall Meeting

​Learn about the latest research results from KPV-LAB at the 2018 MRS Fall Meeting

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16 November, 2018

Check out KPV-LAB's recent paper: Interfacial Dynamics and Contact Passivation in Perovskite Solar Cells

​Charge accumulation at the electron and hole transport layers generates anomalous electrical behavior in perovskite solar cells (PSCs). Hysteresis in the current-voltage characteristic and recombination at the interfaces are the clearest manifestations of this phenomenon, which compromises device performance and stability. In this study, we explained the underlying charge‐carrier dynamics of a hysteresis observed and hysteresis-free PSCs by analyzing their transient photocurrent response. ​

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07 November, 2018

Dr. Michele De Bastiani received his "Eni Award for Young Researcher of the Year" from Sergio Mattarella, President of Italy

​The Eni Award aims to reflect the importance of scientific research and innovation, promoting a better use of energy sources and encouraging a new generation of researchers. The award is an international point of reference for research in the energy and environment sectors.​​​​​​​

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30 October, 2018

KPV-LAB welcomes Dr. Furkan Halis Isikgor as a new member of perovskite team

​​Furkan recently joined Prof. Stefaan de Wolf’s group as a postdoctoral fellow.

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24 October, 2018

KPV-LAB opens new internship projects

​KPV-LAB introduces new Visiting Students Research Program (VSRP) projects.

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22 October, 2018

KPV-LAB welcomes Dr. Jiang Liu as a new member of perovskite team

Jiang's current research interests include the development of high-efficiency perovskite/silicon tandem solar cells, perovskite solar cells based on novel materials including evaporation processing, interface passivation, and advanced characterization.​​

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19 October, 2018

KPV-LAB developed a room-temperature processed, scalable nickel oxide hole transport layers: check out the recently accepted paper

​KPV-LAB researchers developed a room temperature sputtered Nickel oxide (NiOx) hole transport thin films which can be used for perovskite solar cells, perovskite/silicon tandem solar cells, organic solar cells which employs low-temperature resilience substrates.​

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08 October, 2018

KAUST Discovery higlights KPV-LAB's recent study: Tantalum nitride as thin layers improve the extraction of electrons from silicon solar cells

The efficiency of solar cells can be increased by thin-film contacts developed by researchers at KAUST.​

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01 October, 2018

​KPV-LAB members are joining PSCO-2018 Conference at Lausanne

​KPV-LAB members are joining PSCO-2018 Conference at Lausanne​

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16 September, 2018

KPV-LAB and ANU reports 20.8% efficient and 1.22V perovskite solar cells by PMMA: PCBM double-side contact passivation

​Thanks to PMMA: PCBM Double-side passivation, very high‐efficiency (≈20.8%) perovskite cells with some of the highest open circuit voltages (1.22 V) reported for the same 1.6 eV bandgap are demonstrated.

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09 September, 2018

KPV-LAB researchers fabricated the first silicon heterojunction solar cells at KAUST Solar Center with impressive start of >20%.

KPV-LAB researchers fabricated the first silicon heterojunction solar cells at KAUST Solar Center with impressive start of >20%.​​

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31 July, 2018

Research Highlight from Xinbo Yang | OCTOPUS II: An Advanced PECVD System for High-Efficiency Silicon Solar Cells

​High-efficiency silicon heterojunction (SHJ) solar cells (Fig. 1), which use a crystalline silicon (c-Si) wafer as an optical absorber and thin-film layers to form their electrical contacts, have the potential to gain a substantial share in the commercial photovoltaic (PV) market in the future. Currently, the world-record efficiency of 26.7 % is achieved with SHJ technology by placing both contacts in an interdigitated back-contact design. The KAUST Photovoltaics (KPV) Lab, led by Prof. Stefaan De Wolf, which is part of the KAUST Solar Center (KSC), is dedicated to the development of high-efficiency silicon-based solar cells, using SHJ solar cells as a core technology, and to tailoring such solar cells specifically for use in hot and sunny climates.

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31 July, 2018

Check out the Thomas Allen's​ review on passivating contacts in KSC Newsletter

Thomas Allen​ reviewed passivating contacts which is enabling progress towards the efficiency limits of the silicon solar cells. ​

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23 July, 2018

Indeotec Octopus PECVD-PVD Cluster will be operational quite soon!

​Indeotec Octopus PECVD-PVD Cluster enables the fabrication of silicon heterojunction cells on the 6-inch wafers.​

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19 April, 2018

KPV-LAB researchers explored Tantalum Nitride as a passivating contact for silicon solar cells.

Tantalum Nitride has been used for the first time as a passivating contact on silicon solar cells.​

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16 January, 2018

​KAUST Solar Center has a New Milestone​: KPV-LAB researchers have recently achieved >20% efficiency for perovskite solar cells

​KAUST Solar Center has a New Milestone​: KPV-LAB researchers have recently achieved >20% efficiency for perovskite solar cells

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30 May, 2017

Xinbo Yang's paper selected as a front cover in journal of "Progress in Photovoltaics: Research and Applications"

Xinbo Yang's paper selected as a front cover in journal of "Progress in Photovoltaics: Research and Applications"

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