نانومقیاس

نانومقیاس

تغییر ضد حلال و اثر آن بر خواص ساختاری و اپتیکی لایه پروسکایت در سلول های خورشیدی پروسکایتی مزومتخلخل

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته
2 دانشکده فیزیک،دانشگاه یزد، یزد، ایران
چکیده
در این مقاله با انتخاب کلروبنزن (CB) و دی‌اتیل‌اتر (DEE) بعنوان ضدحلال، اثر تغییر ضدحلال بر ریخت‌شناسی، خواص اپتیکی و ساختاری پروسکایت CH3NH3PbI3 و عملکرد سلول خورشیدی پروسکایتی (PSC) با ساختار FTO/Compact TiO2/Mesoporous TiO2/CH3NH3PbI3/CuInS2/Au مورد بررسی قرار گرفت. گاف انرژی مستقیم برای لایه پروسکایت با ضد حلال‌های CB و DEE به ترتیب 579/1 و eV 595/1 محاسبه شد بطوریکه برای هر دو نمونه گاف انرژی غیرمستقیم به اندازه meV 56 از گاف انرژی مستقیم کمتر بود. انرژی اورباخ برای لایه پروسکایت با ضدحلال‌های CB و DEE به ترتیب 085/0 و eV 089/0 بدست آمد که نشان دهنده حالت‌های نقص بین نواری کمتر برای نمونه با ضدحلال CB بود. پارامترهای ساختاری لایه پروسکایت شامل اندازه بلورک، حجم واحد شبکه، چگالی نابجایی و میکروکرنش برای پروسکایت با ضدحلال‌ CB به ترتیب nm 53/66، Å3 249/1083، 4-10 × 25/2 و 3-10 × 69/2 بدست آمد که در مقایسه با مقادیر این پارامترها در نمونه با ضدحلال DEE (به ترتیب nm 59/63، Å3 684/1083، 4-10 × 47/2 و 3-10 × 84/2)، نشان دهنده کیفیت بیشتر و نقص‌های شبکه‌ای کمتر برای نمونه با ضدحلال CB بود. در نهایت PSC با ضدحلال CB بازدهی 89/10% را نشان داد که حدود 19% بیشتر از بازدهی PSC با ضدحلال DEE (16/9%) بود. نتایج این پژوهش می‌تواند در بهینه‌سازی اپتیکی و ساختاری لایه پروسکایت برای ساخت سلول‌های خورشیدی پروسکایت کارامد مورد استفاده قرار گیرد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Changing the Antisolvent and Its Effect on the Structural and Optical Properties of the Perovskite Layer in Mesoporous Perovskite Solar Cells

نویسندگان English

Naser Jahanbakhshi Zadeh 1
Mahmood Borhani Zarandi 2
Bita Nakhaee 2
1 Department of Semiconductor, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
2 Department of Physics, Yazd University, Yazd, Iran
چکیده English

In this paper, by choosing chlorobenzene (CB) and diethyl ether (DEE) as antisolvents, the effect of changing the antisolvent on the morphology, optical and structural properties of CH3NH3PbI3 perovskite and the performance of perovskite solar cell (PSC) with the structure FTO/Compact TiO2/Mesoporous TiO2/CH3NH3PbI3/CuInS2/Au was investigated. The direct optical bandgap for the perovskite with CB and DEE antisolvents was calculated 1.579 and 1.595 eV, respectively, and for both samples the indirect optical bandgap was 56 meV lower than the direct bandgap. The Urbach energy for the perovskite with CB and DEE antisolvents was obtained 0.085 and 0.089 eV, respectively, which indicated fewer interband defect states for the sample with CB antisolvent. The parameters of crystallite size, unit cell volume, dislocation density and microstrain for the perovskite with CB antisolvent were obtained 66.53 nm, 1083.249 Å3, 2.25 × 10-4 and 2.69 × 10-3, respectively, which compared to the values of these parameters in the sample with DEE antisolvent (63.59 nm, 1083.684 Å3, 2.47 × 10-4 and 2.84 × 10-3, respectively), indicating higher quality and fewer lattice defects. Finally, PSC with CB antisolvent showed an efficiency of 10.89%, which was about 19% higher than the efficiency of PSC with DEE antisolvent (9.16%). The results of this research can be used in the optical and structural optimization of the perovskite layer to manufacture efficient perovskite solar cells.

کلیدواژه‌ها English

Antisolvent
Perovskite
Solar Cell
Structural and Optical Properties
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دوره 12، شماره 1
بهار 1404
صفحه 25-34

  • تاریخ دریافت 05 تیر 1404
  • تاریخ بازنگری 15 تیر 1404
  • تاریخ پذیرش 02 مرداد 1404