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Optimization of Li-TFSI Doped TiO2 Electron Transfer Layer in Perovskite Solar Cells

Year 2024, Volume: 24 Issue: 4, 921 - 930, 20.08.2024

Muhittin Ünal , Seçkin Akın , Murat Ebiç , Bekir Baynal

https://doi.org/10.35414/akufemubid.1403743

Abstract

Optimized electron transfer layer (ETL) play a crucial role in achieving higher performance in perovskite solar cells (PSCs). The optoelectronic properties of ETL, such as band energy and trap density, significantly influence the performance of PSCs. However, the low electron mobility of commonly used titanium dioxide (TiO2) ETL in PSCs remains a challenge that needs improvement. In this study, lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) salt is added to TiO2-based ETL at different concentrations (x: 0, 5, 10, 15 mg/ml) by spin-coating technique. Photovoltaic and optoelectronic properties of Li-TFSI-modified PSCs were compared with bare PSCs using the FTO/c-TiO2/mp-TiO2:Li-TFSI/CsFAMAPbI2Br/spiro-OMeTAD/Ag cell architecture. The TiO2:Li-TFSI modification shows a significant enhancement in the morphological, structural, and optical properties of the PSCs. The Li-TFSI contribution significantly improved the electron transfer. While bare PSC achieves a power conversion efficiency (PCE) of 18,16%, the 10 mg/ml Li-TFSI-modified PSCs reached the highest PCE of 19,98%. This study signifies a promising step towards the development and commercialization of highly efficient PSCs by optimizing the optoelectronic properties of TiO2 ETL through Li-TFSI salt modification.

Keywords

Perovskite solar cells Electron transfer layer TiO2 Doping; Li-TFSI

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Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu

Year 2024, Volume: 24 Issue: 4, 921 - 930, 20.08.2024

Muhittin Ünal , Seçkin Akın , Murat Ebiç , Bekir Baynal

https://doi.org/10.35414/akufemubid.1403743

Abstract

Perovskit güneş hücrelerinin (PGH) performansını arttırmak için optimize edilmiş elektron transfer tabakaları (ETT) kritik bir rol oynamaktadır. ETT'nin optoelektronik özellikleri, bant enerjisi ve tuzak yoğunluğu, PGH'nin performansını belirleyici bir şekilde etkilemektedir. Ancak, genellikle PGH'lerinde kullanılan titanyum dioksit (TiO2) ETT'nin düşük elektron hareketliliği iyileştirilmesi gereken bir sorundur. Bu çalışmada, farklı konsantrasyonlarda (x: 0, 5, 10, 15 mg/ml) lityum bis(triflorometansülfonil)imid (Li-TFSI) tuzu döndürerek-kaplama tekniği ile TiO2 tabanlı ETT'ye katkılanmıştır. TiO2:Li-TFSI katkısının morfolojik, yapısal ve optik özellikler üzerindeki etkileri araştırılmıştır. FTO/c-TiO2/mp-TiO2:Li-TFSI/CsFAMAPbI2Br/spiro-OMeTAD/Ag hücre mimarisi kullanılarak elde edilen Li-TFSI katkılı PGH'nin fotovoltaik ve optoelektronik özellikleri katkısız hücreler ile karşılaştırılmıştır. Li-TFSI katkısı, hücrelerdeki elektron transferini önemli ölçüde iyileştirmiştir. Saf PGH'de %18,16'lık bir güç dönüşüm verimliliği (GDV) elde edilirken, 10 mg/ml Li-TFSI katkılı PGH'de %19,98'lik en yüksek GDV değeri elde edilmiştir. Bu çalışma, Li-TFSI katkısıyla TiO2 ETT'nin optoelektronik özelliklerinin optimize edildiği ve yüksek verimli PGH'lerin geliştirilmesi için umut vadeden bir çalışma olarak değerlendirilmektedir.

Keywords

Perovskit güneş hücreleri Elektron transfer tabakası TiO2 Katkılama Li-TFSI

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There are 61 citations in total.

Details

Primary Language Turkish
Subjects Materials Engineering (Other)
Journal Section Articles
Authors

Muhittin Ünal 0000-0003-2431-6870

Seçkin Akın 0000-0001-9852-7246

Murat Ebiç 0000-0002-1280-4052

Bekir Baynal 0009-0000-2563-696X

Early Pub Date July 23, 2024
Publication Date August 20, 2024
Submission Date December 18, 2023
Acceptance Date June 22, 2024
Published in Issue Year 2024 Volume: 24 Issue: 4

Cite

APA Ünal, M., Akın, S., Ebiç, M., Baynal, B. (2024). Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi, 24(4), 921-930. https://doi.org/10.35414/akufemubid.1403743
AMA Ünal M, Akın S, Ebiç M, Baynal B. Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi. August 2024;24(4):921-930. doi:10.35414/akufemubid.1403743
Chicago Ünal, Muhittin, Seçkin Akın, Murat Ebiç, and Bekir Baynal. “Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu”. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 24, no. 4 (August 2024): 921-30. https://doi.org/10.35414/akufemubid.1403743.
EndNote Ünal M, Akın S, Ebiç M, Baynal B (August 1, 2024) Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 24 4 921–930.
IEEE M. Ünal, S. Akın, M. Ebiç, and B. Baynal, “Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu”, Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi, vol. 24, no. 4, pp. 921–930, 2024, doi: 10.35414/akufemubid.1403743.
ISNAD Ünal, Muhittin et al. “Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu”. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 24/4 (August 2024), 921-930. https://doi.org/10.35414/akufemubid.1403743.
JAMA Ünal M, Akın S, Ebiç M, Baynal B. Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi. 2024;24:921–930.
MLA Ünal, Muhittin et al. “Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu”. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi, vol. 24, no. 4, 2024, pp. 921-30, doi:10.35414/akufemubid.1403743.
Vancouver Ünal M, Akın S, Ebiç M, Baynal B. Perovskit Güneş Hücrelerinde Li-TFSI Katkılı TiO2 Elektron Transfer Tabakasının Optimizasyonu. Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi. 2024;24(4):921-30.
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