An approach to low-cost production of Cu(In,Ga)Se2 (CIGS) solar cells based on pulsed electron deposition (PED) has achieved a crucial milestone. Lab-scale solar cells with efficiencies exceeding 15% were obtained by depositing CIGS from a stoichiometric quaternary target at 270 C and without any post-growth treatment. An effective control of the p-doping level in CIGS was achieved by starting the PED deposition with a layer of NaF tailored to generate the optimum Na diffusion. These results show that PED is a promising technology for the development of a competitive low-cost production process for CIGS solar cells.
15% efficient Cu(In,Ga)Se2 solar cells obtained by low-temperature pulsed electron deposition / S., R., N., A., F., B., M., B., D., C., M., C., Delmonte, N., E., G., E., G., R., M., L., N., F., P., A., Z., M., M.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 101:13(2012), pp. 132107-1-132107-4. [10.1063/1.4755772]
15% efficient Cu(In,Ga)Se2 solar cells obtained by low-temperature pulsed electron deposition
DELMONTE, Nicola;
2012-01-01
Abstract
An approach to low-cost production of Cu(In,Ga)Se2 (CIGS) solar cells based on pulsed electron deposition (PED) has achieved a crucial milestone. Lab-scale solar cells with efficiencies exceeding 15% were obtained by depositing CIGS from a stoichiometric quaternary target at 270 C and without any post-growth treatment. An effective control of the p-doping level in CIGS was achieved by starting the PED deposition with a layer of NaF tailored to generate the optimum Na diffusion. These results show that PED is a promising technology for the development of a competitive low-cost production process for CIGS solar cells.| File | Dimensione | Formato | |
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