A photon-recycling incandescent lighting device

被引：1

作者：

Zhang, Heng ^{[1
]}

Huang, Zhequn ^{[2
]}

Ding, Min ^{[3
]}

Wang, Qixiang ^{[1
]}

Feng, Yilin ^{[1
]}

Li, Zhenghong ^{[4
]}

Wang, Shan ^{[4
]}

Yang, Lei ^{[5
]}

Chen, Shuai ^{[5
]}

Shang, Wen

Zhang, Jian ^{[6
]}

Deng, Tao

Xu, Hongxing ^{[7
]}

Cui, Kehang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Ctr Hydrogen Sci, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Zhiyuan Innovat Res Ctr, Shanghai 200240, Peoples R China

[3] Shanghai HeiYi Mat Technol Co Ltd, Shanghai 200240, Peoples R China

[4] Shanghai IdeaOpt Co Ltd, Shanghai 200433, Peoples R China

[5] Tianjin H Chip Technol Grp Corp, Tianjin 300467, Peoples R China

[6] Chinese Acad Sci, Shanghai Inst Ceram, Res Ctr Transparent Ceram, Shanghai 200050, Peoples R China

[7] Wuhan Univ, Inst Adv Studies, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China

来源：

SCIENCE ADVANCES | 2023年 / 9卷 / 15期

关键词：

ARTIFICIAL-LIGHT; POLLUTION; NIGHT;

D O I：

10.1126/sciadv.adf3737

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Energy-efficient, healthy lighting is vital for human beings. Incandescent lighting provides high-fidelity color rendering and ergonomic visual comfort yet is phased out owing to low luminous efficacy (15 lumens per watt) and poor lifetime (2000 hours). Here, we propose and experimentally realize a photon-recycling incandescent lighting device (PRILD) with a luminous efficacy of 173.6 lumens per watt (efficiency of 25.4%) at a power density of 277 watts per square centimeter, a color rendering index (CRI) of 96, and a LT70-rated lifetime of >60,000 hours. The PRILD uses a machine learning-designed 637-nm-thick visible-transparent infrared-reflective filter and a Janus carbon nanotube/hexagonal boron nitride filament to recycle 92% of the infrared radiation. The PRILD has higher luminous efficacy, CRI, and lifetime compared with solid-state lighting and thus is promising for high-power density lighting.

引用

页数：9

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