Development Summary of Semiconductor Lighting in China

Core indicator	Institute of Semiconductors, Chinese Academy of Sciences	Foreign status	Domestic and foreign institutions	Domestic level
p-GaN resistivity	0.136 Ω·cm	0.19--0.82 Ω·cm	UND, GIT, UNC and PKU	Higher
Chip quantum efficiency maintenance rate	84.7% @100 A/cm²	<83.3%	Lumileds and UCSB	Higher
Chip luminous efficiency	252 lm/W @5 A/cm²	202--249 lm/W	Lumileds, Samsung, Nichia, Jing Yuan and Hua Can	Equal
Thermal resistance of watt-level devices	1.89 K/W	2.77--9.7 K/W	Samsung, Siliconware and XMU	Higher
Device luminous flux maintenance rate	98.29%@85 ℃ for 6000 h	98%	CREE and Lumileds	Equal
Lens transmittance	99.25%	<94%	LED Link and LEDiL	Higher

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency^[21]

View table

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency^[21]

Efficiency	2019			Goal in 2035
Efficiency	Indoor	Outdoor		Goal in 2035
LED package efficiency /(lm·W^-1)	200		175	249
Thermal efficiency /%	93		90	95
Driver efficiency /%	88		92	95
Optical efficiency /%	92		87	95
Overall luminaire efficiency /%	75		72	86
Luminaire efficiency /(lm·W^-1)	150		126	214

Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures^[21]unit: lm·W^-1
View table
Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures^[21]unit: lm·W^-1
Type 2019 2022 2025 2035 2050
PC-LED (cool white) 184 232 241 249 250
PC-LED (warm white) 168 223 237 249 250
CM-LED 114 158 196 288 325

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Jinmin Li, Zhiqiang Liu, Tongbo Wei, Jianchang Yan, Xiaoyan Yi, Junxi Wang. Development Summary of Semiconductor Lighting in China[J]. Acta Optica Sinica, 2021, 41(1): 0116002

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Paper Information

Category: Materials

Received: Sep. 9, 2020

Accepted: Nov. 2, 2020

Published Online: Feb. 23, 2021

The Author Email: Li Jinmin (jmli@semi.ac.cn)

DOI:10.3788/AOS202141.0116002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Comparison of domestic and foreign core technical indicators in 2019

Table 1. Comparison of domestic and foreign core technical indicators in 2019

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency[21]

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency[21]

Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures[21]unit: lm·W-1

Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures[21]unit: lm·W-1

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency^[21]

Table 2. Current status and future goals of indoor and outdoor lighting system's efficiency^[21]

Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures^[21]unit: lm·W^-1

Table 3. Historical, current and future luminous efficiencies of LEDs with different package structures^[21]unit: lm·W^-1