The fabricated triode flat display possessed better field emission characteristics and larger anode current 所制作的三極結(jié)構(gòu)平板顯示器樣品具有良好的場(chǎng)致發(fā)射特性以及大的陽(yáng)極電流。
Only when the anode current tries to go negative under the influence of the circuit in which the thyristor is connected does the thyristor turned off and the current go to zero 只有當(dāng)陽(yáng)極電流在與晶閘管連接的電路的作用下開(kāi)始變負(fù)時(shí),晶閘管才會(huì)關(guān)斷且流過(guò)其的電流為零。
I designed a measuring system which can measure the anode current 、 anode voltage 、 grid current and grid voltage at one time . working at manual mode the system can sever as a measuring instrument 根據(jù)要求,設(shè)計(jì)一個(gè)場(chǎng)發(fā)射參數(shù)的測(cè)量系統(tǒng),此系統(tǒng),工作在手動(dòng)方式下可以測(cè)量出某一時(shí)刻點(diǎn)的場(chǎng)發(fā)射的陽(yáng)極電流、陽(yáng)極電壓、柵極電流、柵極電壓。
The effects of b plus voltage , sputtering time , anode current and the target character on the tio2 crystal form , particle size , thickness , aspect , photocatalytic activity , hydrophilicity of tio2 film which prepared by magnetron sputtering were studied . the sputtering conditions and the film parameters were optimized and the technology for preparing tio2 films which have high photocatalytic activity and super - hydrophilicity was obtained , that are as follows : ( 1 ) b plus voltage is 1 . 8kv ; sputtering time is 60min ; the target parameters are : 100 % anatase tio2 , the thickness is 9mm , the diameter is 53 . 5mm , the quality is 34 . 92g and the density is 1 . 726g / cm3 ; anode current is imax / 4 對(duì)于tio _ 2 - sno _ 2復(fù)合膜,當(dāng)sno _ 2的摩爾含量為10時(shí)的復(fù)合膜的光催化活性最好,摩爾含量為1 5時(shí)的復(fù)合膜的親水性最好,并具有良好的親水性長(zhǎng)昆明理工大學(xué)博士學(xué)位論文摘要( 4 ) ( 5 ) ( 6 )期保持特性;對(duì)于tio : / sno :的疊層膜及復(fù)合疊層膜,表層為tio :的疊層膜及復(fù)合疊層膜的光催化活性優(yōu)于表層為sno :的疊層膜及復(fù)合疊層膜。
The contact angle for water of the film which prepared according to above conditions is 4 ? ( 2 ) b plus voltage is 1 . 2kv ; sputtering time is 80min ; the target parameters are : 100 % anatase tio2 , the thickness is 6 . 5mm , the diameter is 53 . 5mm , the quality is 24 . 99g and the density is 1 . 71g / cm3 ; anode current is imax . the constant of reaction kinetics of the film which prepared according to above conditions for degrading methyl orange is 0 . 0192 Fe20 ;的摩爾含量為0 . 5 %時(shí)光催化活性最好;而在fezo3的摩爾含量為0 . 05一0 . 1 %時(shí),獲得了具有超親水性能的復(fù)合薄膜;但fezo3 / tio :的疊層膜及復(fù)合疊層膜的光催化活性及親水性能均不理想,主要原因是fezo3的存在具有光生載流子復(fù)合中心的作用。