Yüksek Verimli ve Uzun Dönem Kararlı Perovskit Güneş Hücrelerinin Üretimi için Arayüzeyin APMS Molekülleri ile Modifikasyonu

Öz

Perovskit malzemesinin yüzey morfolojisi, yüksek nem hassasiyeti, yüksek verimli perovskit güneş hücreleri (PSC'ler) için kritik öneme sahiptir. Arayüzey tabakasının sınırları, hücre içine doğru meydana gelen iyon göçü ve film yüzeyindeki kusurlar, PSC'lerin verimliliğini ve kararlılığını olumsuz yönde etkileyen unsurlardır. Ayrıca bu filmlerin yüzeyinde ve tanecik sınırlarında bulunan kusurlar nedeniyle yük rekombinasyonu üzerinde de olumsuz bir etkiye sahiptir. Bu çalışmada, TiO2 ve perovskit filminin kusurları pasifleştirmek için bir silan birleştirme maddesi olan küçük molekül olarak 3-aminopropiltrimetoksisilan (APMS) kullanıldığı hücrelerinin üretimi gerçekleştirilmiştir. Perovskit taneciklerinin kristalliği ve düzgünlüğünü iyileştirerek çözeltiyle işlenmiş düzlemsel heteroeklemli güneş hücreleri için güç dönüşüm verimliliği, daha az histerezis ile %8,95'ten %9,77'ye çıkarıldı. Sonuç olarak APMS küçük moleküllerinin perovskit hücrelerin yüzey özelliklerini de iyileştirerek hücre performansını arttırdığı ve en önemli sorunlarından biri olan kararlılık problemine çözüm sunma potansiyeli olduğu tespit edilmiştir.

Anahtar Kelimeler

• Perovskit güneş hücreleri
• Kararsızlık problemi
• Yarı iletken aygıtlar
• Hücre kararlılığı

Modification of Interface with APMS Molecules for the Fabrication of Highly Efficient and Long-Term Stable Perovskite Solar Cells

Öz

The surface morphology of perovskite material is critical for high-efficiency perovskite solar cells (PSCs), due to its high sensitivity to humidity. The boundaries of the interface layer, ion migration into the cell, and defects on the film surface negatively affect the efficiency and stability of PSCs. Furthermore, defects on the surface and at the grain boundaries of these films also have a negative impact on charge recombination. In this study, the fabrication of cells using 3-aminopropyltrimethoxysilane (APMS), a silane coupling agent, as a small molecule to passivate defects in a TiO2 and perovskite film was achieved. By improving the crystallinity and uniformity of perovskite grains, the power conversion efficiency for solution-treated planar heterojunction solar cells was increased from 8.95% to 9.77% with less hysteresis. In conclusion, it was determined that APMS small molecules improve the surface properties of perovskite cells, enhancing cell performance and offering a potential solution to one of their most significant problems: stability.

Anahtar Kelimeler

• Perovskite solar cells
• Instability problem
• Semiconductor devices
• Cell stability

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