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Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition

Tin sulfide (SnS) is a candidate absorber material for Earth-abundant, non-toxic solar cells. SnS offers easy phase control and rapid growth by congruent ...

Massachusetts Institute of Technology

Identically configured bulk heterojunction organic solar cells based on merocyanine dye donor and fullerene acceptor compounds (see figure) are manufactured either from solution or by vacuum deposition, to enable a direct comparison. Whereas the former approach is more suitable for screening purposes, the latter approach affords higher short-circuit current density and power conversion efficiency.

Direct comparison of highly efficient solution- and vacuum-processed organic solar cells based on merocyanine dyes.

Tin sulfide (SnS), as a promising absorber material in thin-film photovoltaic devices, is described. Here, it is confirmed that SnS evaporates congruently, which provides facile composition control akin to cadmium telluride. A SnS heterojunction solar cell is demons trated, which has a power conversion efficiency of 3.88% (certified), and an empirical loss analysis is presented to guide further performance improvements.

Article	Year
Direct comparison of highly efficient solution- and vacuum-processed organic solar cells based on merocyanine dyes. Advanced materials (Deerfield Beach, Fla.)\| PubMed ID: 20512818	2010
3.88% efficient tin sulfide solar cells using congruent thermal evaporation. Advanced materials (Deerfield Beach, Fla.)\| PubMed ID: 25142203	2014

Vera Steinmann

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