تقرير
Cation exchange synthesis of AgBiS$_2$ quantum dots for highly efficient solar cells
| العنوان: | Cation exchange synthesis of AgBiS$_2$ quantum dots for highly efficient solar cells |
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| المؤلفون: | Senina, Alina, Prudnikau, Anatol, Wrzesińska-Lashkova, Angelika, Vaynzof, Yana, Paulus, Fabian |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Physics - Applied Physics |
| الوصف: | Silver bismuth sulfide (AgBiS$_2$) 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 AgBiS$_2$ nanocrystals, without altering their size and shape. When implemented into photovoltaic devices, AgBiS$_2$ 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. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2404.14426 |
| رقم الأكسشن: | edsarx.2404.14426 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |