Cation exchange synthesis of AgBiS2 quantum dots for highly efficient solar cells
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Silver bismuth sulfide (AgBiS2) nanocrystals have emerged as a promising eco-friendly, low-cost solar cell absorber material. Their direct synthesis often relies on the hot-injection method, requiring the application of high temperatures and vacuum for prolonged times. Here, we demonstrate an alternative synthetic approach via a cation exchange reaction. In the first-step, bis(stearoyl)sulfide is used as an air-stable sulfur precursor for the synthesis of small, monodisperse Ag2S nanocrystals at room-temperature. In a second step, bismuth cations are incorporated into the nanocrystal lattice to form ternary AgBiS2 nanocrystals, without altering their size and shape. When implemented into photovoltaic devices, AgBiS2 nanocrystals obtained by cation exchange reach power conversion efficiencies of up to 7.35%, demonstrating the efficacy of the new synthetic approach for the formation of high-quality, ternary semiconducting nanocrystals.
Details
Original language | English |
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Pages (from-to) | 9325-9334 |
Number of pages | 10 |
Journal | Nanoscale |
Volume | 16 |
Issue number | 19 |
Publication status | Published - 6 Mar 2024 |
Peer-reviewed | Yes |
External IDs
Mendeley | 04af8169-dec5-3524-882e-177fa44c1c06 |
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