Intersubband transition in ZnO/MgZnO quantum well has been exploited for infrared and terahertz optoelectronic applications due to its large band offset and fascinating material properties.Here,we theoretically demons...Intersubband transition in ZnO/MgZnO quantum well has been exploited for infrared and terahertz optoelectronic applications due to its large band offset and fascinating material properties.Here,we theoretically demonstrate piezophototronic effect as another way to control the intersubband absorption wavelength through quantum-confined Stark effect.The intersubband optical absorption properties under different stresses are obtained by solving the eight-band k·p Hamiltonian and coupled Schr¨odinger-Poisson equations self-consistently.By combining stress control and quantum well structure,the absorption wavelength can show infrared blueshift or redshift phenomena in a wide range.This work can provide an effective avenue to control and utilize quantum-confined Stark effect in intersubband infrared absorption and promote the relative potential optoelectronic devices.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.U2430204,U23A20567,and U2230119)the Outstanding Youth Science and Technology Talents Program of Sichuan Province,China(Grant No.22JCQN0005).
文摘Intersubband transition in ZnO/MgZnO quantum well has been exploited for infrared and terahertz optoelectronic applications due to its large band offset and fascinating material properties.Here,we theoretically demonstrate piezophototronic effect as another way to control the intersubband absorption wavelength through quantum-confined Stark effect.The intersubband optical absorption properties under different stresses are obtained by solving the eight-band k·p Hamiltonian and coupled Schr¨odinger-Poisson equations self-consistently.By combining stress control and quantum well structure,the absorption wavelength can show infrared blueshift or redshift phenomena in a wide range.This work can provide an effective avenue to control and utilize quantum-confined Stark effect in intersubband infrared absorption and promote the relative potential optoelectronic devices.
