後生可畏呀 雄女學生設計簡易追日太陽能板系統

這個系統花了她們二三年的時間，遇到困難就想盡辦法突破，這種創新精神讓我覺得國家未來還是有希望的。加油呀...

參考來源：

"太陽能一直被認為是最具發展潛力的綠色能源，不過由於太陽能電池轉換效率低，且供電受太陽仰角、位置及日夜影響，使得它遲遲難以被推廣。為此，不少發明家絞盡腦汁，試圖用各種方法提升它的效益。高雄女中高瞻計劃教師邱崑山和學生方怡琳、蕭渝庭、蔡芙苗、林紀吟共同設計了一個成本低、額外耗電量少的「簡易追日式太陽能板」，利用四個燈泡型太陽能電池，即可做出太陽方位感測器，鎖定太陽，並獲得第八屆旺宏科學獎銀牌獎。 方怡琳表示，簡易追日式太陽能板是利用「向陽面和背陽面的太陽能電池產生電流大小不一樣」的原理。她設計兩組方位感測器，每組兩個燈泡型太陽能電池，一組電池分別朝向東、西方，另一組分別朝向南、北方。假設太陽偏西南方，則朝西、南方的電池接受到的太陽能，相對較朝東、北方的高，電流較大，由此判斷太陽方位，讓太陽能板朝西南方運轉，直到兩組電流差值在某個範圍內才停止轉動。而根據實驗測試結果，簡易追日式太陽能板的功率約可提升 75%。"
- 科學人雜誌網站 (在「Google 網頁註解」中檢視)

Short-wave infrared looks at solar wafers

這一篇文章主要描述使用SWIR(短波紅外線，比近紅外線波長還要長)技術加上InGaAs相機的需求越來越多。Sensors Unlimited Goodrich ISR Systems這家公司專門提供NIR/SWIR的InGaAs相機。

重點摘要:

At SWIR wavelengths, silicon becomes transparent. Since circuits are created on a wafer's front side, InGaAs sensors can create images of these circuit patterns on crystalline-silicon PV wafers and standard silicon wafers through their back sides, to determine whether they are aligned properly and to find cracks and voids, said Malchow. "When finished crystalline PV solar cells are connected to a power supply and voltage is forced into them, it creates an electroluminescent glow that can be imaged to find cracks, dead spots, contaminants, and weak areas," he said.

InGaAs linescan or area cameras can be used in conjunction with an IR microscope to inspect very fine detail in surface or buried layers of standard silicon wafers, said Malchow, as well as to give a rough measure of layer thicknesses. For those who need to inspect wafers at very high speeds, the new Goodrich SU1024LDH2 linescan camera will reach line rates of over 91,000 lines/s, reducing exposure times. "Our cameras are also used for examining structures inside MEMS devices, to ensure that nothing is left from the process to obstruct movement," he said.

詳情請見:
http://www.tmworld.com/article/457139-Short_wave_infrared_looks_at_solar_wafers.php