The reverse gate leakage mechanism of W-gate and Ti N-gate AlGaN/GaN high-electron-mobility transistors(HEMTs)with N2plasma surface treatment is investigated using current–voltage(I–V)and capacitance–voltage(C–V)c...The reverse gate leakage mechanism of W-gate and Ti N-gate AlGaN/GaN high-electron-mobility transistors(HEMTs)with N2plasma surface treatment is investigated using current–voltage(I–V)and capacitance–voltage(C–V)characteristics and theoretical calculation analysis.It is found that the main reverse gate leakage mechanism of both devices is the trapassisted tunneling(TAT)mechanism in the entire reverse bias region(-30 V to 0 V).It is also found that the reverse gate leakage current of the W-gate Al GaN/GaN HEMTs is smaller than that of the TiN gate at high reverse gate bias voltage.Moreover,the activation energies of the extracted W-gate and Ti N-gate AlGaN/GaN HEMTs are 0.0551 e V–0.127 eV and0.112 eV–0.201 eV,respectively.展开更多
甲状腺乳头状癌是由多种因素共同作用导致其发生、发展.解聚素-金属蛋白酶17（adisintegrin and metalloproteinase 17,ADAM17）是最近被发现的一种具有蛋白剪切酶样作用的基因,研究表明在多种恶性肿瘤里呈高表达[1-2].为明确ADAM17在...甲状腺乳头状癌是由多种因素共同作用导致其发生、发展.解聚素-金属蛋白酶17（adisintegrin and metalloproteinase 17,ADAM17）是最近被发现的一种具有蛋白剪切酶样作用的基因,研究表明在多种恶性肿瘤里呈高表达[1-2].为明确ADAM17在甲状腺乳头状癌中的表达及意义,本研究检测ADAM17在甲状腺乳头状癌组织及癌旁正常甲状腺组织中的表达情况,以期为将来临床应用提供理论依据.展开更多
文摘The reverse gate leakage mechanism of W-gate and Ti N-gate AlGaN/GaN high-electron-mobility transistors(HEMTs)with N2plasma surface treatment is investigated using current–voltage(I–V)and capacitance–voltage(C–V)characteristics and theoretical calculation analysis.It is found that the main reverse gate leakage mechanism of both devices is the trapassisted tunneling(TAT)mechanism in the entire reverse bias region(-30 V to 0 V).It is also found that the reverse gate leakage current of the W-gate Al GaN/GaN HEMTs is smaller than that of the TiN gate at high reverse gate bias voltage.Moreover,the activation energies of the extracted W-gate and Ti N-gate AlGaN/GaN HEMTs are 0.0551 e V–0.127 eV and0.112 eV–0.201 eV,respectively.
文摘甲状腺乳头状癌是由多种因素共同作用导致其发生、发展.解聚素-金属蛋白酶17（adisintegrin and metalloproteinase 17,ADAM17）是最近被发现的一种具有蛋白剪切酶样作用的基因,研究表明在多种恶性肿瘤里呈高表达[1-2].为明确ADAM17在甲状腺乳头状癌中的表达及意义,本研究检测ADAM17在甲状腺乳头状癌组织及癌旁正常甲状腺组织中的表达情况,以期为将来临床应用提供理论依据.
