## Abstract Green InGaN LEDs showed great improvements over the last decade, but still perform not as good as blue InGaN LEDs. Brightness, Efficiency and subβlinearity of brightness versus driving current (βdroopβ) are significantly lower for a 530 nm green LED than for a 440 nm blue LED. Assuming
Successful LED-development in Switzerland
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 260 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0961-1290
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## 14 Heat pumps 9w%s43 Two-step dlstrlci heating and cooling
Twenty species of planktonic rotifers were important in Lake Biel during 1978 . Eight species were present throughout the year, four species occurred only in spring and eight species in summer or autumn . Rotifer numbers attained two major maxima, one in May (19 .3 106 ind . m2) and one in August (1
Since the early 1990s, new forms of referendum campaigns have emerged in the Swiss political arena. In this paper, we examine how referendum campaigns have transformed in Switzerland, focusing on a number of features: their intensity, duration and inclusiveness (i.e., the variety of actors involved)