英语翻译0.91 eV,1.09 eV and 1.21 eV for CdS,ZnS,CaS and SrS,resp
来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/09/29 10:24:29
英语翻译
0.91 eV,1.09 eV and 1.21 eV for CdS,ZnS,CaS and SrS,respectively,Fig.11(b).These energy offsets are very large and well exceed the magnitude of thermal energy even at elevated
temperatures thereby resulting in strong scattering of conduction electrons.15,54 For the p-type PbS system,the situation is very different and far more interesting.The hole mobilities of the CdS containing
samples are the highest,Fig.11(a).Namely,the room temperature carrier mobility is \x02148 cm2 V\x031 s\x031 for the Pb0.975Na0.025S–3.0% CdS sample,much higher than \x02118 cm2 V\x031 s\x031,\x02115 cm2 V\x031 s\x031,and \x02111 cm2 V\x031 s\x031 for 3.0% ZnS,3.0% CaS,and 3.0% SrS containing samples (with a similar carrier concentration of 4.78 \x04 1019 cm\x033),respectively.The CdS nanocrystals in the PbS matrix do not appear to signifi-
cantly affect the hole scattering.The better alignment of energies of the valence band maxima between PbS and CdS (in the NaCl structure) can account for this.The electronic band structure calculations for PbS and the metal sulfides indicate valence band maxima (VBM) energy differences (with respect to the VBM of PbS) of 0.13 eV,0.16 eV,0.53 eV and 0.63 eV for CdS,ZnS,CaS and SrS respectively,15,54
see Fig.11(b).The minimum band offset is about 0.13 eV with the valence band maximum of PbS lying higher than that of CdS.The energy difference is even greater with the other metal
sulfides.
0.91 eV,1.09 eV and 1.21 eV for CdS,ZnS,CaS and SrS,respectively,Fig.11(b).These energy offsets are very large and well exceed the magnitude of thermal energy even at elevated
temperatures thereby resulting in strong scattering of conduction electrons.15,54 For the p-type PbS system,the situation is very different and far more interesting.The hole mobilities of the CdS containing
samples are the highest,Fig.11(a).Namely,the room temperature carrier mobility is \x02148 cm2 V\x031 s\x031 for the Pb0.975Na0.025S–3.0% CdS sample,much higher than \x02118 cm2 V\x031 s\x031,\x02115 cm2 V\x031 s\x031,and \x02111 cm2 V\x031 s\x031 for 3.0% ZnS,3.0% CaS,and 3.0% SrS containing samples (with a similar carrier concentration of 4.78 \x04 1019 cm\x033),respectively.The CdS nanocrystals in the PbS matrix do not appear to signifi-
cantly affect the hole scattering.The better alignment of energies of the valence band maxima between PbS and CdS (in the NaCl structure) can account for this.The electronic band structure calculations for PbS and the metal sulfides indicate valence band maxima (VBM) energy differences (with respect to the VBM of PbS) of 0.13 eV,0.16 eV,0.53 eV and 0.63 eV for CdS,ZnS,CaS and SrS respectively,15,54
see Fig.11(b).The minimum band offset is about 0.13 eV with the valence band maximum of PbS lying higher than that of CdS.The energy difference is even greater with the other metal
sulfides.
对于 CdS, ZnS, CaS 和SrS来说分别为 0.91eV,1.09 eV和1.21 eV,如图11(b)所示.这些能量偏移量非常大而且甚至在高温下大大超过热能的大小,从而导致传导电子很强的分散.[15,54] 对于p型PbS系统来说,情况大大不同,而...
cultivate a reputation for being reliable and hardworking,ev
英语翻译and are lower quality but benefit the environment for ev
英语翻译XuLijia won historic success in sailing for China and ev
英语翻译Friendship is a very important human relationship and ev
谁会这道题:The bell rang and ev
Kitty likes dancing and she often p() dancing for 2 hours ev
英语翻译It's good idea to spell and pronounce new words aloud ev
英语翻译Dearest One,how are you today i hope you are fine and ev
英语翻译Loving you..It's more then just a dream come true,And ev
英语翻译The Marches were a happy family.Poverty,hard work,and ev
英语翻译17When you got swallow the cloud And the ambition let ev
英语翻译The very first paragraph introduces us to Zhenbao,and ev