Si/Zn_xCd_1-xTe heterostructures with different Zn contents: growth, electrical and photoelectrical properties

Abstract

(111) substrates. The details of the growth process were analyzed. The possibilities of the quasi-closed volume method for producing high quality homogeneous layers of solid solutions were evaluated. It is shown that this method is very effective for the production of films with x < 0.1 and may be implemented at condensation temperatures up to ~ 300 o C. Studies of electrical and photovoltaic properties showed high quality of Zn x Cd 1-x Te layers and structures in general. This is, in particular, evidenced by increasing photosensitivity in the region of absorption of the film material, and of the structure as a whole, increasing integral sensitivity with zinc doping, a significant reduction in nonideality factor in solid solution films as compared with CdTe films. We have established an increase of mechanical stability of the structure with increasing Zn content, expressed in maintaining the strength during repeated thermal cycling. As a result, the manufactured Si/Zn x Cd 1-x Te heterostructures can serve as a basis for fabrication of multijunction solar energy converters.

Design and construction of the Cadet-M unmanned marine platform using alternative energy

“…Cadet-M has a carbon fiber float housing for lightweight construction [6]. To increase the operating time, heterostructured solar panels [6,7,8,9,10] on a silicon substrate with high efficiency were used as well as a battery management system (BMS) [11,12], which allows autonomous monitoring of up to two days. The platform is equipped with sonar, a water sampling system, a radiation sensor, a robot arm, a radar and other instruments and devices.…”