1. Chip ɗin shuɗi-LED + nau'in phosphor mai launin rawaya-kore wanda ya haɗa da nau'in phosphor mai launuka da yawa

 Layer mai launin rawaya-kore mai suna phosphorus yana ɗaukar wani ɓangare nahaske mai shuɗina guntun LED don samar da hasken photoluminescence, kuma ɗayan ɓangaren hasken shuɗi daga guntun LED ana watsa shi daga layin phosphor kuma yana haɗuwa da hasken rawaya-kore da phosphor ke fitarwa a wurare daban-daban a cikin sararin samaniya, kuma hasken ja, kore da shuɗi suna haɗuwa don samar da haske fari; Ta wannan hanyar, mafi girman ƙimar ka'idar ingancin canza hasken phosphor, wanda shine ɗayan ingancin kwantum na waje, ba zai wuce 75% ba; kuma mafi girman ƙimar cire haske daga guntu zai iya kaiwa kusan 70% kawai, don haka a ka'ida, haske fari shuɗi Mafi girman ingancin hasken LED ba zai wuce 340 Lm/W ba, kuma CREE ya kai 303Lm/W a cikin 'yan shekarun nan. Idan sakamakon gwajin ya kasance daidai, ya cancanci a yi bikin.

2. Haɗuwar ja, kore da shuɗiRGB LEDnau'in ya haɗa da nau'in RGBW-LED, da sauransu.

 An haɗa diodes guda uku masu fitar da haske na R-LED (ja) + G-LED (kore) + B-LED (shuɗi) tare, kuma manyan launuka uku na ja, kore da shuɗi an haɗa su kai tsaye a sararin samaniya don samar da haske fari. Domin samar da haske mai inganci ta wannan hanyar, da farko, LEDs masu launuka daban-daban, musamman LEDs masu kore, dole ne su kasance tushen haske mai inganci, wanda za a iya gani daga "hasken fari mai daidaito" wanda hasken kore ya kai kusan kashi 69%. A halin yanzu, ingancin haske na LEDs masu shuɗi da ja ya kasance mai girma sosai, tare da ingancin adadi na ciki ya wuce kashi 90% da 95%, bi da bi, amma ingancin adadi na ciki na LEDs masu kore yana da nisa. Wannan lamari na ƙarancin ingancin haske na LEDs masu tushen GaN ana kiransa "rabin haske mai kore." Babban dalili shine LEDs masu kore ba su sami kayan epitaxial nasu ba. Kayan jerin phosphorus arsenic nitride da ke akwai suna da ƙarancin inganci a cikin bakan rawaya-kore. Ana amfani da kayan epitaxial ja ko shuɗi don yin LEDs kore. A ƙarƙashin yanayin ƙarancin yawan wutar lantarki, saboda babu asarar canza phosphor, LED kore yana da inganci mafi girma fiye da hasken kore mai launin shuɗi + phosphor. An ruwaito cewa ingancin haskensa ya kai 291Lm/W a ƙarƙashin yanayin wutar lantarki ta 1mA. Duk da haka, raguwar ingancin hasken kore da tasirin Droop ya haifar a ƙarƙashin babban wutar lantarki yana da mahimmanci. Lokacin da yawan wutar lantarki ya ƙaru, ingancin hasken yana raguwa da sauri. A yanayin wutar lantarki na 350mA, ingancin hasken shine 108Lm/W. A ƙarƙashin yanayin 1A, ingancin hasken yana raguwa. Zuwa 66Lm/W.

Ga nau'ikan phosphines guda uku, fitar da haske zuwa ga kore ya zama babban cikas ga tsarin kayan. Canza abun da ke cikin AlInGaP don sanya shi fitar da haske kore maimakon ja, lemu ko rawaya - wanda ke haifar da ƙarancin iyakancewar ɗaukar hoto yana faruwa ne saboda ƙarancin gibin kuzari na tsarin kayan, wanda ke cire ingantaccen haɗuwa da radiation.

Saboda haka, hanyar inganta ingancin hasken LEDs na kore: a gefe guda, yi nazarin yadda za a rage tasirin Droop a ƙarƙashin yanayin kayan epitaxial da ake da su don inganta ingancin haske; a gefe guda, yi amfani da canza hasken LEDs masu launin shuɗi da phosphorus kore don fitar da hasken kore. Wannan hanyar za ta iya samun ingantaccen haske mai haske, wanda a ka'ida zai iya cimma ingantaccen haske fiye da hasken fari na yanzu. Yana cikin hasken kore mara kwatsam. Babu matsala da haske. Tasirin hasken kore da aka samu ta wannan hanyar na iya wuce 340 Lm/W, amma har yanzu ba zai wuce 340 Lm/W ba bayan haɗa farin haske; na uku, ci gaba da bincike da nemo kayan epitaxial naka, kawai Ta wannan hanyar, akwai ɗan haske cewa bayan samun hasken kore wanda ya fi 340 Lm/w, farin haske da aka haɗa tare da manyan launuka uku na ja, kore da shuɗi LEDs na iya zama mafi girma fiye da iyakar ingantaccen haske na farin LEDs na shuɗi na 340 Lm/W.

3. Hasken Ultravioletguntu + manyan phosphorus guda uku masu launi suna fitar da haske 

Babban lahani da ke tattare da nau'ikan farin LED guda biyu da ke sama shine rashin daidaiton rarraba haske da chromaticity na sarari. Hasken ultraviolet ba zai iya ganewa ta idon ɗan adam ba. Saboda haka, bayan hasken ultraviolet ya fita daga guntu, manyan phosphors guda uku na layin rufewa suna shaye shi, wanda aka canza shi zuwa haske fari ta hanyar hasken phosphor, sannan a fitar da shi zuwa sararin samaniya. Wannan shine babban fa'idarsa, kamar fitilun fluorescent na gargajiya, ba shi da rashin daidaiton launi na sarari. Duk da haka, ingancin hasken ka'idar hasken haske na farin LED na farin guntu ba zai iya zama mafi girma fiye da ƙimar ka'idar hasken farin guntu mai shuɗi ba, balle ƙimar ka'idar hasken farin nau'in RGB. Duk da haka, ta hanyar haɓaka manyan phosphors guda uku masu inganci waɗanda suka dace da haɓakar hasken ultraviolet ne kawai za a iya samun hasken farin ultraviolet waɗanda ke kusa ko ma sama da hasken farin LED guda biyu da ke sama a wannan matakin. Kusanci zuwa hasken ultraviolet mai shuɗi, yuwuwar Girman hasken farin LED na matsakaicin raƙuman ruwa da gajeren raƙuman ultraviolet ba zai yiwu ba.