STABILITY STUDY OF SR3AB06 OXIDE MATERI AL AS RED-EMITTIN G LU MINESENCE HOST
Sr,AlO,, i s an in t eresting ox i de materi a l. n ot onl y bccnu. e i t hn good \.'mi ss ion c h aracteristic when used as l umin e• c..:n ce host. s,-,_.1\1: 01, also ha. l ow produ c tton cost. I n order to reach a deeper u nderstanding about Sr,A l:O.. pro...
Saved in:
| Main Author: | |
|---|---|
| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/46424 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Sr,AlO,, i s an in t eresting ox i de materi a l. n ot onl y bccnu. e i t hn good \.'mi ss ion c h aracteristic when used as l umin e• c..:n ce host. s,-,_.1\1: 01, also ha. l ow produ c tton cost. I n order to reach a deeper u nderstanding about Sr,A l:O.. properties. its elect ron i c struc ture and opt ical properties were calcul ated by OFT calculations. In th is research, Sr;AI 20r, and
Sr3AIO o:Eu 3
were synt hesized by h yd rotherma l method at 1 80"C for 12 hours foll o\\'cd by
ca lcination at 900°C for 6 hours. Sr,AI: O.. and Sr_,AI:01,:Eu ' were observed to ha ve h ygroscopic properties wh i ch t riggered phae trans formation process into Sr,Ab(OHk. Sr3A bOo bandgap energy (Eg) from calculat i on and measurement results were .52 eV and
5.59 eY respecti,•ely. Bandgap measurement resu l ts of Sr3Al 20,,: Eu3- which synthesi?ed by h ydrotherma l method a t I O"C a nd 220°C '"" re -L-B e\' a nd -L-11 eY respectivel y. By 325 nm excita ti o n \\•a vel ength, Sr,A l: Ot.:t u •- was observed to produce red em i ssi o ns wh i ch correspond to 5Do --+ "Fo. 5Do --+ •F1 . 5D1 --+ 'f _,_ 5 0:--+ - F>. a nd 5D,.--+•F:tr:111sitio ns.
|
|---|