Hướng tới Cải thiện Hiệu suất Quang Điện của Pin Mặt Trời Nhạy Sắc Đồ Aqueous bằng Cực Làm Việc TiO2 Nanobeads Poro Mesoporous Được Pha Tungsten

Yanrong Guo1, Tingting Zou1, Qin Cheng1, Binqing Jiao1, Xiaoli Zhang2
1State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan, China
2State Centre for International Cooperation on Designer Low-Carbon & Environmental Materials, and School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China

Tóm tắt

Các hạt siêu nhỏ TiO2 có lỗ mao quản được pha tungsten (W-doped) với diện tích bề mặt cao và hiệu ứng tán xạ vượt trội đã được sử dụng để chuẩn bị cực anode. Việc pha tungsten sẽ gây ra sự dịch chuyển dương của dải dẫn TiO2, nâng cao động lực cho việc truyền electron và hiệu suất thu gom. Quá trình quang điện hóa cho thấy sự giảm tốc độ tái tổ hợp điện tích và chiều dài khuếch tán electron tăng lên sau khi được pha tungsten. Bằng việc tinh chỉnh nồng độ pha tungsten xuống 0,25%, các pin DSCs sử dụng nước đã sản xuất điện áp mạch hở tăng đáng kể lên 712 mV và dòng điện ngắn mạch đạt 7,05 mA·cm-2, dẫn đến hiệu suất chuyển đổi năng lượng tổng thể tăng lên 3,40% dưới bức xạ mô phỏng 1 000 W·m-2, tương đương với mức tăng khoảng 25% so với cực anode không được pha tungsten.

Từ khóa

#Tungsten #TiO2 #nanobeads #điện năng lượng mặt trời #DSCs #công nghệ pin mặt trời

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