We report the fabrication details of a monolithically integrated electro-absorption modulated distributed feedback laser （EML） based on the ion-implantation induced quantum well intermixing （QWI） technique. To wel...We report the fabrication details of a monolithically integrated electro-absorption modulated distributed feedback laser （EML） based on the ion-implantation induced quantum well intermixing （QWI） technique. To well-preserve material quality in the laser region, thermal-oxide SiO2 is deposited before implantation and the ion-implantation buffer layer is etched before annealing. Thirteen pairs quantum well and barrier are employed to compensate deterioration of the modulator＇s extinction ratio （ER） caused by the QWI process. The fabricated EML exhibits an 18 dB static ER at 5 V reverse bias. The 3 dB small signal modulation band- width of modulator is over 13.5 GHz indicating that this EML is a suitable light source for over 16 Gb/s optical transmission links.展开更多
The flexible thin-film gallium arsenide solar cell and its array have the advantages of light flexibility,high photoelectric conversion efficiency,good radiation resistance,etc.,and are the key of the energy system of...The flexible thin-film gallium arsenide solar cell and its array have the advantages of light flexibility,high photoelectric conversion efficiency,good radiation resistance,etc.,and are the key of the energy system of Space Solar Power Stations.The design service life of the Space Solar Power Station is more than 20 years,and the harsh and complex GEO high-orbit space environments bring a critical impact on the power generation performance and reliability of the flexible thin film solar arrays.Aiming at the functional decay caused by the thermal stress mismatch of flexible thin-film solar arrays under extreme thermal cycling and a significantly increased threat of radiation damage,this paper simulates and analyzes the impact of the extreme temperature changes on the performance of the composite forming flexible solar array under space conditions.It studied the thermal stress damage behavior,and designs a buffer layer structure to achieve thermodynamic matching through machine learning,effectively improves the thermodynamic compatibility and structural reliability of the flexible solar array.展开更多
基金supported by the National"863"Project of China(Nos.2013AA014502 and 2011AA010303)the National Nature Science Foundation of China(Nos.61474112,61320106013,61274071,61090392,and61006044)the National"973"Program of China(No.2012CB934202)
文摘We report the fabrication details of a monolithically integrated electro-absorption modulated distributed feedback laser （EML） based on the ion-implantation induced quantum well intermixing （QWI） technique. To well-preserve material quality in the laser region, thermal-oxide SiO2 is deposited before implantation and the ion-implantation buffer layer is etched before annealing. Thirteen pairs quantum well and barrier are employed to compensate deterioration of the modulator＇s extinction ratio （ER） caused by the QWI process. The fabricated EML exhibits an 18 dB static ER at 5 V reverse bias. The 3 dB small signal modulation band- width of modulator is over 13.5 GHz indicating that this EML is a suitable light source for over 16 Gb/s optical transmission links.
文摘The flexible thin-film gallium arsenide solar cell and its array have the advantages of light flexibility,high photoelectric conversion efficiency,good radiation resistance,etc.,and are the key of the energy system of Space Solar Power Stations.The design service life of the Space Solar Power Station is more than 20 years,and the harsh and complex GEO high-orbit space environments bring a critical impact on the power generation performance and reliability of the flexible thin film solar arrays.Aiming at the functional decay caused by the thermal stress mismatch of flexible thin-film solar arrays under extreme thermal cycling and a significantly increased threat of radiation damage,this paper simulates and analyzes the impact of the extreme temperature changes on the performance of the composite forming flexible solar array under space conditions.It studied the thermal stress damage behavior,and designs a buffer layer structure to achieve thermodynamic matching through machine learning,effectively improves the thermodynamic compatibility and structural reliability of the flexible solar array.
