Progress towards marketable earth-abundant chalcogenide solar cells
2011; Elsevier BV; Volume: 519; Issue: 21 Linguagem: Inglês
10.1016/j.tsf.2010.12.225
ISSN1879-2731
AutoresTeodor K. Todorov, Oki Gunawan, S. Jay Chey, Thomas Goislard de Monsabert, Aparna Prabhakar, David B. Mitzi,
Tópico(s)Semiconductor materials and interfaces
ResumoKesterite-related photovoltaic materials are considered a promising alternative to CdTe and Cu(In,Ga)(S,Se)2 absorbers, primarily because they are not reliant on scarce elements such as indium and tellurium or the heavy metal cadmium. Recently, we reported a performance breakthrough for this materials class, reaching by a simple hydrazine-based deposition technique 9.6% power conversion efficiency for Cu2ZnSn(S,Se)4 devices (40% improvement over vacuum-based methods). Here, more detailed characterization for a hydrazine-prepared device shows the potential of this technology for further efficiency improvement. We also present initial device results for Cu2ZnSn(S,Se)4 films deposited using a mixed water-hydrazine-based solvent, yielding devices with 8.1% efficiency.
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