35 research outputs found
An ambipolar BODIPY derivative for a white exciplex OLED and cholesteric liquid crystal laser toward multifunctional devices
A new interface engineering method is demonstrated for the preparation of an efficient white organic light-emitting diode (WOLED) by embedding an ultrathin layer of the novel ambipolar red emissive compound 4,4-difluoro-2,6-di(4-hexylthiopen-2-yl)-1,3,5,7,8-pentamethyl-4-bora-3a,4a-diaza-s-indacene (bThBODIPY) in the exciplex formation region. The compound shows a hole and electron mobility of 3.3 Γ 10β4 and 2 Γ 10β4 cm2 Vβ1 sβ1, respectively, at electric fields higher than 5.3 Γ 105 V cmβ1. The resulting WOLED exhibited a maximum luminance of 6579 cd mβ2 with CIE 1931 color coordinates (0.39; 0.35). The bThBODIPY dye is also demonstrated to be an effective laser dye for a cholesteric liquid crystal (ChLC) laser. New construction of the ChLC laser, by which a flat capillary with an optically isotropic dye solution is sandwiched between two dye-free ChLC cells, provides photonic lasing at a wavelength well matched with that of a dye-doped planar ChLC cell
Photovoltaic properties of a heterostructure on the basis of porous silicon and polyaniline
An electric junction between porous silicon (n-type conductivity) and conductive polyaniline (p-type conductivity) has been made by electrochemical polymerization of aniline on the porous silicon surface. This heterostructure has been found to exhibit rectifying Π-V characteristics. Under illumination, a considerable increase of the current is observed with a reverse bias. The structure photosensitivity is defined mainly by two barriers, namely, by the polymer/porous silicon interphase and the porous silicon/crystalline silicon barrier.ΠΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΊΠΎΠ½ΡΠ°ΠΊΡ ΠΌΠ΅ΠΆΠ΄Ρ ΠΏΠΎΡΠΈΡΡΡΠΌ ΠΊΡΠ΅ΠΌΠ½ΠΈΠ΅ΠΌ Ρ n-ΡΠΈΠΏΠ° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡΡ ΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΠΈΠΌ ΠΏΠΎΠ»ΠΈΠ°Π½ΠΈΠ»ΠΈΠ½ΠΎΠΌ Ρ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡΡ p-ΡΠΈΠΏΠ° ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ ΠΏΡΡΠ΅ΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΈΠ·Π°ΡΠΈΠΈ Π°Π½ΠΈΠ»ΠΈΠ½Π° Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΡΠΈΡΡΠΎΠ³ΠΎ ΠΊΡΠ΅ΠΌΠ½ΠΈΡ. ΠΠ°ΠΉΠ΄Π΅Π½ΠΎ, ΡΡΠΎ ΡΠ°ΠΊΠ°Ρ Π³Π΅ΡΠ΅ΡΠΎΡΡΡΡΠΊΡΡΡΠ° Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΡΠ΅Ρ Π²ΡΠΏΡΡΠΌΠ»ΡΡΡΠΈΠ΅ Π-V Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ. ΠΡΠΈ ΠΎΡΠ²Π΅ΡΠ΅Π½ΠΈΠΈ Π½Π°Π±Π»ΡΠ΄Π°Π»ΠΎΡΡ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΠ΅ ΡΠΎΠΊΠ° ΠΏΡΠΈ ΠΎΠ±ΡΠ°ΡΠ½ΠΎΠΌ ΡΠΌΠ΅ΡΠ΅Π½ΠΈΠΈ. Π€ΠΎΡΠΎΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡ ΡΡΡΡΠΊΡΡΡΡ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅ΡΡΡ Π΄Π²ΡΠΌΡ Π±Π°ΡΡΠ΅ΡΠ°ΠΌΠΈ: ΠΈΠ½ΡΠ΅ΡΡΠ°Π·ΠΎΠΉ ΠΏΠΎΠ»ΠΈΠΌΠ΅Ρ-ΠΏΠΎΡΠΈΡΡΡΠΉ ΠΊΡΠ΅ΠΌΠ½ΠΈΠΉ ΠΈ ΠΏΠΎΡΠΈΡΡΡΠΉ ΠΊΡΠ΅ΠΌΠ½ΠΈΠΉ-ΠΌΠΎΠ½ΠΎΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΊΡΠ΅ΠΌΠ½ΠΈΠΉ.ΠΠ»Π΅ΠΊΡΡΠΈΡΠ½ΠΈΠΉ ΠΊΠΎΠ½ΡΠ°ΠΊΡ ΠΌiΠΆ ΠΏΠΎΡΡΠ²Π°ΡΠΈΠΌ ΠΊΡΠ΅ΠΌΠ½iΡΠΌ Π· n-ΡΠΈΠΏΡ ΠΏΡΠΎΠ²iΠ΄Π½iΡΡΡ i Π΅Π»Π΅ΠΊΡΡΠΎΠΏΡΠΎΠ²iΠ΄Π½ΠΈΠΌ ΠΏΠΎΠ»iΠΌΠ΅ΡΠΎΠΌ - ΠΏΠΎΠ»iΠ°Π½iΠ»iΠ½ΠΎΠΌ Π· ΠΏΡΠΎΠ²iΠ΄Π½iΡΡΡ p-ΡΠΈΠΏΡ ΡΡΠ²ΠΎΡΠ΅Π½ΠΎ ΡΠ»ΡΡ
ΠΎΠΌ Π΅Π»Π΅ΠΊΡΡΠΎΡ
iΠΌiΡΠ½ΠΎΡ ΠΏΠΎΠ»iΠΌΠ΅ΡΠΈΠ·Π°ΡiΡ Π°Π½iΠ»iΠ½Ρ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½i ΠΏΠΎΡΡΠ²Π°ΡΠΎΠ³ΠΎ ΠΊΡΠ΅ΠΌΠ½iΡ. 3Π½Π°ΠΉΠ΄Π΅Π½ΠΎ, ΡΠΎ ΡΠ°ΠΊΠ° Π³Π΅ΡΠ΅ΡΠΎΡΡΡΡΠΊΡΡΡΠ° Π΄Π΅ΠΌΠΎΠ½ΡΡΡΡΡ Π²ΠΈΠΏΡΡΠΌΠ»ΡΡΡi Π-V Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ. ΠΡΠΈ ΠΎΡΠ²iΡΠ»Π΅Π½Π½i ΡΠΏΠΎΡΡΠ΅ΡiΠ³Π°Π»ΠΎΡΡ Π·Π½Π°ΡΠ½Π΅ ΠΏiΠ΄Π²ΠΈΡΠ΅Π½Π½Ρ ΡΡΡΡΠΌΡ ΠΏΡΠΈ Π·Π²ΠΎΡΠΎΡΠ½ΠΎΠΌΡ Π·ΠΌiΡΠ΅Π½Π½i. Π€ΠΎΡΠΎΡΡΡΠ»ΠΈΠ²iΡΡΡ ΡΡΡΡΠΊΡΡΡΠΈ ΠΏΠ΅ΡΠ΅Π²Π°ΠΆΠ½ΠΎ Π²ΠΈΠ·Π½Π°ΡΠ°ΡΡΡΡΡ Π΄Π²ΠΎΠΌΠ° Π±Π°Ρ'ΡΡΠ°ΠΌΠΈ: iΠ½ΡΠ΅ΡΡΠ°Π·ΠΎΡ ΠΏΠΎΠ»iΠΌΠ΅Ρ-ΠΏΠΎΡΡΠ²Π°ΡΠΈΠΉ ΠΊΡΠ΅ΠΌΠ½iΠΉ ΡΠ° ΠΏΠΎΡΡΠ²Π°ΡΠΈΠΉ ΠΊΡΠ΅ΠΌΠ½iΠΉ-ΠΌΠΎΠ½ΠΎΠΊΡΠΈΡΡΠ°Π»iΡΠ½ΠΈΠΉ ΠΊΡΠ΅ΠΌΠ½iΠΉ
BaZrO3 perovskite nanoparticles as emissive material for organic/inorganic hybrid light-emitting diodes
BaZrO3 perovskite nanoparticles as emissive material for organic/inorganic hybrid light-emitting diodes
New WOLEDs based on p-extended azatrioxa[8]circulenes
Π’Π΅ΠΊΡΡ ΡΡΠ°ΡΡΠΈ Π½Π΅ ΠΏΡΠ±Π»ΠΈΠΊΡΠ΅ΡΡΡ Π² ΠΎΡΠΊΡΡΡΠΎΠΌ Π΄ΠΎΡΡΡΠΏΠ΅ Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ ΠΏΠΎΠ»ΠΈΡΠΈΠΊΠΎΠΉ ΠΆΡΡΠ½Π°Π»Π°