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Lớp oxit dẫn điện trong suốt MgSnO3 không chứa indium: nghiên cứu về tính chất cấu trúc, quang học và điện cũng như phân tích hiệu suất quang điện
Applied Nanoscience - 2022
Tóm tắt
Trong công trình này, chúng tôi tập trung vào việc chuẩn bị một vật liệu oxit dẫn điện trong suốt (TCO) dễ chế tạo—Magnesium Ortho Stannate (MgSnO3—MTO) nhằm giảm thiểu những thiếu sót do các TCO thường gặp gây ra. Acetat cung cấp magnesi và clorua thiếc (II) đã được lựa chọn làm vật liệu khởi đầu. Trong nghiên cứu này, acetat magnesi được giữ cố định và clorua thiếc (II) được tăng theo các tỷ lệ sau: (MA:SC được lấy là 0,1 M:0,1 M-S1A, 0,1 M:0,2 M-S2A, 0,1 M:0,3 M-S3A, 0,1 M:0,4 M-S4A, 0,1 M:0,5 M-S5A). Bằng cách sử dụng kỹ thuật phun sương hơi (NSP), vật liệu cần thiết được phủ lên bề mặt kính và phim mỏng được chuẩn bị đã được tôi ở 300 °C trong ba giờ. Tất cả các mẫu oxit magnesi thiếc (MTO) đều thể hiện đỉnh phản xạ mạnh (205) của cấu trúc hình thoi của oxit magnesi thiếc và độ tinh thể tốt hơn đạt được ở các mẫu S4A và S5A. Hơn nữa, nghiên cứu này cũng phân tích ảnh hưởng của độ dày MTO lên các tính chất vật lý và quang điện tử khác nhau, bao gồm độ tinh thể, hình thái bề mặt, độ trong suốt quang học và điện trở suất. Các phim có độ dày khác nhau (thay đổi từ 310 đến 590 nm), độ tinh thể của phim cải thiện theo chiều dày từ mỏng đến mỏng hơn. Tỷ lệ truyền ánh sáng khả kiến trung bình vượt quá 80% và giá trị khoảng cách năng lượng là 3,65 eV cho mẫu S5A. Kết quả FESEM cho thấy kích thước hạt đã được cải thiện sau khi tôi trong khi tỷ lệ mol tăng lên. Các nghiên cứu về hiệu ứng Hall cho thấy giá trị điện trở suất giảm từ 10–2 đến 10–3 (Ω/cm), trong khi tỷ lệ mol của Clorua thiếc (SnCl2) tăng lên. Một so sánh về hiệu suất được thực hiện trên các tế bào quang năng nhạy màu (DSSC) được xây dựng sử dụng các tổ hợp khác nhau của MTO/MTO làm anode quang và electroda đối diện. Kết quả cho thấy DSSC được cấu thành từ MTO phủ platinum (S5A) làm electroda đối diện và MTO phủ TiO2 (S5A) làm anode quang thể hiện hiệu suất vượt trội 2,72% so với các tế bào khác.
Từ khóa
#phân tích hiệu suất quang điện #vật liệu oxit dẫn điện trong suốt #oxit magnesi thiếc #tính chất quang học #tính chất điệnTài liệu tham khảo
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