پژوهش سیستم های بس ذره ای

پژوهش سیستم های بس ذره ای

طراحی و شبیه‏ سازی عددی سلول‏ های خورشیدی پشت سر هم بر پایة Sb2S3 جهت بهبود عملکرد فوتوولتائیک

نوع مقاله : مقاله پژوهشی کامل

نویسندگان
گروه فیزیک، دانشکده علوم پایه، دانشگاه سیستان و بلوچستان، زاهدان، ایران
چکیده
در این تحقیق سلول‏های خورشیدی پشت سر هم مختلفی طراحی و شبیه‏سازی شده که در آنها زیرسلول بالایی Sb2S3 است. ساختارهای مختلفی شامل Sb2Se3، CISe، CZTSe و GeTe برای زیرسلول پایینی پیشنهاد شد. تطابق جریان در زیرسلول بالا و پایین در سلول‏های پشت سر هم از اهمیت زیادی برخوردار است. برای رسیدن به نقطه تطابق جریان ضخامت لایه‏های زیرسلول پایینی ثابت نگه داشته شد و ضخامت لایه جاذب سلول بالایی تغییرداده شد تا چگالی جریان در هردو زیر سلول یکسان شود. در نقطه تطابق جریان عملکرد سلول بالایی تحت تابش طیف استاندارد AM 1.5G و عملکرد زیرسلول پایینی تحت تابش طیف فیلتر شده مورد ارزیابی قرار گرفت و سپس منحنی مشخصه جریان- ولتاژ سلول پشت سر هم از مجموع منحنی‏های مشخصه دو زیرسلول فرعی به دست آمد. بازدهی به دست آمده برای سلول‏های پشت سرهم Sb2S3/Sb2Se3، Sb2S3/CIS، Sb2S3/CZTSe و Sb2S3/GeTe به ترتیب برابر %10/22، %95/30، %83/24 و %80/36 به دست آمد. هر چه اختلاف گاف انرژی سلول‏های فرعی بیشتر باشد، فوتون‏های بیشتری جمع‏آوری می‏شوند و چگالی جریان بزرگتری برای سلول حاصل می‏شود. بهترین عملکرد هنگامی به دست آمد که از GeTe به عنوان زیرسلول پایینی استفاده شد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Exploring a suitable partner for Sb2S3 solar cells for use in tandem solar cells

نویسندگان English

Zahra Dahmardeh
Mohsen Saadat
Department of Physics, Faculty of Science, University Sistan and Baluchestan, Zahedan, Iran
چکیده English

In this research, different tandem solar cells have been designed and simulated, in which the upper sub-cell is Sb2S3. Different structures including Sb2Se3, CISe, CZTSe and GeTe were proposed for the lower sub-cell.It is very important to match the current in the upper and lower sub-cells in consecutive cells. To reach the current matching point, the thickness of the layers of the lower sub-cell was kept constant and the thickness of the absorbing layer of the upper cell was changed so that the current density in both sub-cells was the same. At the current matching point, the performance of the upper cell under the AM1.5G standard spectrum radiation and the performance of the lower sub-cell under the filtered spectrum radiation were evaluated, and then the current-voltage characteristic curve of the tandem cell was obtained from the sum of the characteristic curves of the two sub-cells. The efficiency obtained for Sb2S3/Sb2Se3, Sb2S3/CIS, Sb2S3/CZTSe and Sb2S3/GeTe tandem cells was 22.10%, 30.95%, 24.83% and 36.80%, respectively. The greater the energy gap difference of the sub-cells, the more photons are collected and the greater current density is obtained for the cell. The best performance was obtained when GeTe was used as the bottom sub-cell.

کلیدواژه‌ها English

Tandem solar cells
Sb2S3
Numerical simulation
Filtered spectrum
Current matching technique
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دوره 14، شماره 1 - شماره پیاپی 40
بهار 1403
بهار 1403
صفحه 41-54

  • تاریخ دریافت 14 خرداد 1402
  • تاریخ بازنگری 16 بهمن 1402
  • تاریخ پذیرش 23 اسفند 1402