Facile Synthesis of Highly Photoactive α-Fe2O3-Based Films for Water Oxidation

G Wang, Y Ling, DA Wheeler, KEN George… - Nano …, 2011 - ACS Publications
This work reports a facile method for preparing highly photoactive α-Fe2O3 films as well as
their implementation as photoanodes for water oxidation. Transparent α-Fe2O3 films were …

Potassium Postdeposition Treatment-Induced Band Gap Widening at Cu(In,Ga)Se2 Surfaces – Reason for Performance Leap?

E Handick, P Reinhard, JH Alsmeier… - … applied materials & …, 2015 - ACS Publications
Direct and inverse photoemission were used to study the impact of alkali fluoride
postdeposition treatments on the chemical and electronic surface structure of Cu (In, Ga) …

Back and front contacts in kesterite solar cells: state-of-the-art and open questions

C Platzer-Björkman, N Barreau, M Bär… - Journal of Physics …, 2019 - iopscience.iop.org
We review the present state-of-the-art within back and front contacts in kesterite thin film
solar cells, as well as the current challenges. At the back contact, molybdenum (Mo) is …

Chalcopyrite solar cells—state-of-the-art and options for improvement

S Siebentritt, TP Weiss - Science China Physics, Mechanics & Astronomy, 2023 - Springer
Chalcopyrite solar cells will have to play an important role to mitigate the climate crisis,
because of their particularly low carbon emissions. Doping in these semiconductors is due …

Formation of a KInSe Surface Species by NaF/KF Postdeposition Treatment of Cu(In,Ga)Se2 Thin-Film Solar Cell Absorbers

E Handick, P Reinhard, RG Wilks… - … applied materials & …, 2017 - ACS Publications
A NaF/KF postdeposition treatment (PDT) has recently been employed to achieve new
record efficiencies of Cu (In, Ga) Se2 (CIGSe) thin film solar cells. We have used a …

Impact of KCN etching on the chemical and electronic surface structure of Cu2ZnSnS4 thin-film solar cell absorbers

M Bär, BA Schubert, B Marsen, S Krause… - Applied physics …, 2011 - pubs.aip.org
The chemical and electronic surface structure of Cu 2 ZnSnS 4 thin-film solar cell absorbers
has been investigated by direct and inverse photoemission. Particular emphasis was placed …

Electrical properties of point defects in CdS and ZnS

JB Varley, V Lordi - Applied Physics Letters, 2013 - pubs.aip.org
We investigate native point defects in CdS and ZnS, which are conventional n-type buffer
layers used in thin-film solar cells. Using hybrid functional calculations, we characterize the …

Unraveling film transformations and device performance of planar perovskite solar cells

TB Song, Q Chen, H Zhou, S Luo, YM Yang, J You… - Nano Energy, 2015 - Elsevier
Abstract High performance (> 15%) organometaltrihalide based solar cells have been
demonstrated in recent years to be a promising candidate for low cost photovoltaics and …

High-energy resolution X-ray absorption and emission spectroscopy reveals insight into unique selectivity of La-based nanoparticles for CO2

O Hirsch, KO Kvashnina, L Luo… - Proceedings of the …, 2015 - National Acad Sciences
The lanthanum-based materials, due to their layered structure and f-electron configuration,
are relevant for electrochemical application. Particularly, La2O2CO3 shows a prominent …

Methodological investigation of the band gap determination of solid semiconductors via UV/Vis spectroscopy

ES Welter, S Garg, R Gläser, M Goepel - ChemPhotoChem, 2023 - Wiley Online Library
Several different evaluation methods (EM) to obtain the band gap energy (Eg) of
semiconductors via UV/Vis diffuse reflectance spectroscopy (DRS) are used in literature and …