A Noninjection Reaction Route to CuInSe₂Nanocrystals with Triethanolamine as the Complexing Agent

Abstract

The chalcopyrite-type CuInSe 2 is a remarkable material for thin film solar cells owing to its electronic structure and optical response. Single-phase sphere-like CuInSe 2 nanocrystallite particles were prepared by a facile noninjection method with triethanolamine as the complexing agent and the solvent simultaneously. The period of the reaction was the key to form single-phase CuInSe 2 nanocrystals at 240 o C. TEM, XRD, XPS, EDX investigations were performed to characterize the morphology and the detailed structure of as-synthesized CuInSe 2 nanocrystals. All of the analysis results proved that the synthesized nanocrystals were pure phase and close to the stoichiometric ratio rather than a simple mixture. The band gap of the obtained CuInSe 2 nanocrystals was 1.03 ± 0.03 eV.

Effect of Soft-annealing on the Properties of CIGSe Thin Films Prepared from Solution Precursors

“…Solution-based deposition methods are simple processes, suitable for large-area, and high-throughput manufacturing. Among various solution-based deposition methods such as the synthesis of CIGSe nanoparticle, [8][9][10] and the use of hydrazine-based CIGSe solution, 9 and selenization of CIG precursors, 12,13 the selenization of CIG precursors has attracted much attention because it is a simple and non-toxic method. However, the selenization of CIG precursors requires the usage of organic chemicals in the preparation of CIG precursors requisitely in order to acquire good quality thin film.…”

A Comparative Study of Nanoparticle‐Ink‐Based CIGSSe Thin Film Solar Cells on Different Back Contact Substrates

“…Of course, it is desirable that solution processes are used to prepare all the components from the absorber film to the electrode layers, but it is not fully achievable with the existing technology. Instead, there have been many attempts to synthesize a CIGSSe absorber film, the most important component of the CIGSSe thin‐film solar cell, via a solution process …”