Thin‐film solar cells exceeding 22% solar cell efficiency: An overview on CdTe-, Cu (In, Ga) Se2-, and perovskite-based materials

M Powalla, S Paetel, E Ahlswede, R Wuerz… - Applied Physics …, 2018 - pubs.aip.org
Already, several technologies of polycrystalline thin‐film photovoltaic materials have
achieved certified record small‐cell power conversion efficiencies exceeding 22%. They are …

[HTML][HTML] Advances in CIGS thin film solar cells with emphasis on the alkali element post-deposition treatment

C Zhao, S Yu, W Tang, X Yuan, H Zhou, T Qi… - Materials Reports …, 2023 - Elsevier
In the past tens of years, the power conversion efficiency of Cu (In, Ga) Se 2 (CIGS) has
continuously improved and been one of the fastest growing photovoltaic technologies that …

Controllable double gradient bandgap strategy enables high efficiency solution‐processed kesterite solar cells

Y Zhao, S Chen, M Ishaq, M Cathelinaud… - Advanced Functional …, 2024 - Wiley Online Library
The double gradient bandgap absorber has the potential to enhance carrier collection,
improve light collection efficiency, and make the performance of solar cells more …

Cd-Free Cu 2 ZnSnS 4 solar cell with an efficiency greater than 10% enabled by Al 2 O 3 passivation layers

X Cui, K Sun, J Huang, JS Yun, CY Lee… - Energy & …, 2019 - pubs.rsc.org
Environmentally friendly earth-abundant Cd-free Cu2ZnSnS4 (CZTS) solar cells have
recently achieved increasing power conversion efficiency by using ZnSnO as the buffer …

Effect of Alkali Metal Atom Doping on the CuInSe2-Based Solar Cell Absorber

M Malitckaya, HP Komsa, V Havu… - The Journal of Physical …, 2017 - ACS Publications
The efficiency of Cu (In, Ga) Se2 (CIGS)-based solar cells can be markedly improved by
controlled introduction of alkali metal (AM) atoms using post-deposition treatment (PDT) after …

Heavy Alkali Treatment of Cu(In,Ga)Se2 Solar Cells: Surface versus Bulk Effects

S Siebentritt, E Avancini, M Bär… - Advanced Energy …, 2020 - Wiley Online Library
Chalcopyrite solar cells achieve efficiencies above 23%. The latest improvements are due to
post‐deposition treatments (PDT) with heavy alkalis. This study provides a comprehensive …

Na-Diffusion Enhanced p-type Conductivity in Cu(In,Ga)Se2: A New Mechanism for Efficient Doping in Semiconductors.

ZK Yuan, S Chen, Y Xie, JS Park… - Advanced Energy …, 2016 - search.ebscohost.com
A new mechanism responsible for the hole concentration increase in the CIGS thin films
after Na doping is proposed. At high temperature, a high concentration of Na is doped into …

Direct evidence for grain boundary passivation in Cu(In,Ga)Se2 solar cells through alkali-fluoride post-deposition treatments

N Nicoara, R Manaligod, P Jackson, D Hariskos… - Nature …, 2019 - nature.com
The properties and performance of polycrystalline materials depend critically on the
properties of their grain boundaries. Polycrystalline photovoltaic materials–eg hybrid halide …

How band tail recombination influences the open‐circuit voltage of solar cells

MH Wolter, R Carron, E Avancini… - Progress in …, 2022 - Wiley Online Library
The power conversion efficiency of solar cells strongly depends on the open‐circuit voltage
which, in turn, depends on the recombination activity within the device. A possible source of …

Effects of Rubidium Fluoride and Potassium Fluoride Postdeposition Treatments on Cu(In,Ga)Se2 Thin Films and Solar Cell Performance

E Avancini, R Carron, TP Weiss, C Andres… - Chemistry of …, 2017 - ACS Publications
Postdeposition treatments (PDTs) with sodium fluoride (NaF) and potassium fluoride (KF)
were introduced as a way to improve the efficiency of Cu (In, Ga) Se2 (CIGS) based solar …