Enabling fine-grain free 2-micron thick CISe/CIGSe film fabrication via a non-hydrazine based solution processing route

Abstract

Solution processing of CuInSe2/CuInGaSe2 (CISe/CIGSe) photovoltaic devices from a non-hydrazine based routes have been studied for the past few years and a significant improvement in device performance has been achieved...

A selenium-based “alkahest”: reactive dissolutions of metals and metal compounds with n-alkylammonium polyselenide solutions

“…Although the amine-thiol solvent system can dissolve metal selenides and selenium, the thiol is still present to potentially act as a sulfur. 36 Depending on subsequent annealing conditions, the formation of sulfoselenide materials rather than selenides can occur. 37 While in some cases sulfur alloying into a metal selenide material is beneficial, in other cases the pure selenide material is desired.…”

Environment-friendly copper-based chalcogenide thin film solar cells: status and perspectives

“…For instance, the surface morphology of CIGS to the n-buffer layer determines the formation of carrier recombination that should be avoided. 19,116,[128][129][130][131][132] This journal is © The Royal Society of Chemistry 2023 Therefore, good crystallinity and surface morphology of the CIGS layer could enhance the performance of the solar cell because of minimum carrier recombination formation. 127…”

“…(d) Summary of PCEs of single-junction quaternary-CuCh-based solar cells with and without CdS layers 19,[130][131][132]…”

Over 12% Efficient CuIn(S,Se)2 Solar Cell with the Absorber Fabricated from Dimethylformamide Solution by Doctor‐Blading in Ambient Air

“…Thus, developing a scalable deposition technique in ambient air is critically important for this technique to be applied to mature industrial processes. Among the scalable deposition techniques such as spray pyrolysis, [18,19] inkjetprinting, [20,21] and doctor-blading, [22][23][24][25] doctor-blading is the most simple and easy-control one that is compatible with high throughput roll-to-roll fabrication. However, unlike perovskite [26,27] and organic thin-film solar cells [28,29] for which doctorblading has been extensively used and high performance has been realized, fabrication of chalcopyrite absorber through doctor-blading is relatively rare.…”

“…The efficiency of CISSe solar cell fabricated by doctor‐blading molecular precursor solution has been 6.7%, which was reported by Tiwari [ 24 ] group in 2005. We note that while our work was under review process, an article was published by Agrawal [ 25 ] group, which reported 12.9% CISSe and 14.1% CIGSSe solar cells with the absorbers blade‐coated from amine–thiol‐based solutions with interface modification.…”