Sử dụng hạt tán xạ nano để cải thiện chất lượng đèn led thương mại
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Từ khóa:
Đèn LED thương mại
chỉ số hoàn màu
hạt tán xạ nano
độ sáng
hiệu suất tán xạ
Tóm tắt
Đèn LED đã và đang trở thành một giải pháp chiếu sáng bền vững trong ngành chiếu sáng. Tuy nhiên, đèn LED thương mại có hiệu suất hiển thị màu sắc thấp. Bài báo này đề xuất một cách tiếp cận khả thi nhằm nâng cao chất lượng của đèn LED thương mại thông qua việc điều chỉnh các hệ số tán xạ. Cụ thể, hạt tán xạ nano TiO2 được thêm vào lớp phốt pho YAG:Ce3+ để nâng cao hiệu suất tán xạ, từ đó cải thiện sự chuyển đổi và chiết xuất ánh sáng xanh từ LED chíp. Trong nghiên cứu này, nồng độ TiO2 thay đổi từ 0 wt% đến 20 wt%. Kết quả thu được cho thấy 5 wt% là nồng độ TiO2 phù hợp để đạt được hiệu quả tán xạ tốt nhất cho việc cải thiện quang thông và bảo toàn chỉ số hoàn màu của đèn LED. Nếu nồng độ TiO2 vượt quá 5 wt% thì hai thông số này sẽ suy giảm do tán xạ ánh sáng quá mạnh. Trong khi đó, 10 wt% là nồng độ TiO2 phù hợp nhất để cải thiện đồng dạng màu của đèn LED.
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Anh, N. D. Q. “Sử dụng hạt tán Xạ Nano để cải thiện chất lượng đèn Led thương mại”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 22, số p.h 3, Tháng Ba 2024, tr 53-57, doi:10.31130/ud-jst.2024.614E.
