Results 41 to 50 of about 315 (122)

Stability of Commercial nc‐Si:H Heterojunction Solar Cells Under Variable Illumination

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 6, Page 758-770, June 2026.
High‐intensity light treatments enhance initial solar cell efficiency but trigger long‐term degradation. By combining hydrogen profiling and lifetime modeling, this study reveals how hydrogen migration at the interface impacts passivation stability.
Maysa Sarsour, Chukwuka Madumelu, Alison Ciesla, Shona McNab, Brendan Wright, Fiacre Rougieux, Martin Green, Ruy S. Bonilla, Xinya Niu, N. J. Ekins‐Daukes, Jessica Yajie Jiang   +10 more
wiley   +1 more source

LeTID in PERC Cells from Gallium-Doped Czochralski Silicon: Extent, Accelerated Testing and Mitigation via an Adapted Firing Process

, 2023
In this work, we analyse the light and elevated temperature induced degradation (LeTID) behavior of passivated emitter and rear cells (PERC) based on gallium (Ga)-doped Czochralski (Cz) silicon.
Kwapil, Wolfram, Rein, Stefan, Glunz, Stefan, Ourinson, Daniel, Maischner, Felix, Greulich, Johannes   +5 more
core   +1 more source

Contact Resistance Increase in Ga-Doped Silicon Solar Cells at Current Injection and Elevated Temperature Treatments

SiliconPV Conference Proceedings
PERC solar cells based on Gallium p-type doping were treated at elevated temperatures in the range of 80…160°C and current injection. Current injection is conducted in a current-induced degradation (CID) setup in the dark, measuring voltage while ...
Matthias Müller, Mahsa Mohammadi, August Weber, Jonas Kern, Matthias Trempa, Thomas Buck, Johannes Heitmann   +6 more
doaj   +1 more source

Investigating Long‐Term Degradation and Defects of Solar Photovoltaic Modules in Tropical Climates: A Case Study of Malaysia

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
This study investigates the degradation of four monocrystalline silicon photovoltaic (PV) modules after nine years of outdoor exposure in Kuala Lumpur, Malaysia's tropical climate. Using visual inspection, electroluminescence, and electrical performance analyses, the modules exhibited an average power loss of 40.35%, primarily due to encapsulant ...
Abdulwahab A. Q. Hasan, A. W. Mahmood Zuhdi, Ali Q. Al‐Shetwi, Mohammad Aminul Islam, K. Prajindra Sankar, M. I. Idris, Gamal Alkawsi   +6 more
wiley   +1 more source

Reliability of Commercial TOPCon PV Modules—An Extensive Comparative Study

Progress in Photovoltaics: Research and Applications, Volume 33, Issue 12, Page 1378-1386, December 2025.
Commercial PV modules based on the TOPCon technology showed significant degradation (PMPP) in some accelerated aging tests, especially damp heat and UV tests. After indoor UV aging, the modules exhibited a degradation and recovery behavior, whose mechanism and practical relevance is still under investigation.
Paul Gebhardt, Ulli Kräling, Esther Fokuhl, Ingrid Hädrich, Daniel Philipp   +4 more
wiley   +1 more source

Impact of LeTID in Industrial P- and Sb-Doped n-Type Cz-Si With Melt Recharging

SiliconPV Conference Proceedings
In this study the impact of treatments under illumination at elevated temperatures on the long-term stability of excess carrier lifetime in state-of-the-art melt recharging Czochralski-grown silicon with n-type dopants is investigated.
Joshua Kamphues, Sarah Marie Warmbold, Juri Miech, Wei Han, Yichun Wang, Axel Herguth, Giso Hahn, Fabian Geml   +7 more
doaj   +1 more source

Manifestation of Light‐ and Elevated‐Temperature‐Induced Degradation in n‐Type Silicon: Initial Lifetime Improvement Due to Temporary Recovery

physica status solidi (a), Volume 222, Issue 24, December 2025.
The presence of light‐ and elevated‐temperature‐induced degradation (LeTID) defects after the fast‐firing step is observed in n‐type silicon by demonstrating the existence of the temporary recovery (TR), the reverse reaction to LeTID, alongside TR's unique properties.
Benjamin Hammann, Wolfram Kwapil, Jörg Horzel, Florian Schindler, Martin C. Schubert   +4 more
wiley   +1 more source

Influence and mitigation of interference by LID and LETID in damp heat and thermal cycling tests on PV modules

, 2022
Accelerated aging tests as defined in testing standards such as IEC 61215 are important to assure the quality and safety of photovoltaic (PV) modules. The test conditions often contain high temperatures and sometimes carrier injection, which can cause ...
D. Philipp, G. Mülhöfer, Gebhardt, Paul, P. Gebhardt, Wesselak, Viktor, V. Wesselak, Philipp, Daniel, Fokuhl, Esther, T. Mikolajick, E. Fokuhl, Mülhöfer, Georg, Mikolajick, Thomas   +11 more
core   +1 more source

Method and Equipment for Reducing the Efficiency Degradation of Monocrystalline Passivated Emitter and Rear Cells

Energies
Infrared soldering as a step in module encapsulation, which would cause light-induced degradation (LID) and light- and elevated-temperature-induced degradation (LeTID) effects on solar cells, may cause efficiency mixing among solar cells that were ...
Weitao Fan, Honglie Shen, Xin Zhang, Hong Pan   +3 more
doaj   +1 more source

On‐Stage Degradation of Solar Cells Studied Using Capacitance Transient and Luminescence Spectroscopies

physica status solidi (a), Volume 222, Issue 19, October 2025.
Light‐ and temperature‐induced degradation (LeTID) of Si‐based solar cells is studied using low‐temperature photo‐ and electroluminescence and deep‐level transient spectroscopy during the on‐stage degradation/regeneration process. Based on the obtained and previously reported data, LeTID reflects hydrogen dynamics between extended defects present in ...
Teimuraz Mchedlidze, Katharina Klose, August Weber, Eugen Drubetskoi, Johannes Heitmann, Matthias Müller   +5 more
wiley   +1 more source