| 1. |
- Di Benedetto, Luigi, et al.
(författare)
-
Strain balance approach for optimized signal-to-noise ratio in SiGe quantum well bolometers
- 2009
-
Ingår i: ESSDERC 2009 - Proceedings of the 39th European Solid-State Device Research Conference. - 9781424443536 ; , s. 101-104
-
Konferensbidrag (refereegranskat)abstract
- This work presents thermal and electrical characterization of SiGe/Si multi-quantum wells (MQWs) with different layer profiles in complete bolometer structures. The thermal property of the bolometers was studied by measuring thermal coefficient of resistivity (TCR) through I-V curves for five temperatures (25, 40, 55, 80 and 100°C) and for four different pixel areas. The results show a strong dependency of TCR on the Si/SiGe layer thickness and the presence of dopant impurity in the MQW. The noise measurements of MQWs were performed carefully by eliminating all external contributions and the noise spectroscopy provided the noise characteristic parameters. The results demonstrate that the noise depends on the geometric size of the MQW and it increases with decreasing of the pixel area. The investigations show the noise level in the bolometer structures is sensitive to any dopant segregation from the contact layers.
|
|
| 2. |
- Wang, P. -F, et al.
(författare)
-
A novel self-refreshable capacitorless DRAM cell
- 2009
-
Ingår i: ESSDERC 2009 - Proceedings of the 39th European Solid-State Device Research Conference. - 9781424443536 ; , s. 113-116
-
Konferensbidrag (refereegranskat)abstract
- A novel DRAM cell based on floating gate (FG) concept is investigated. Compared to the conventional two-transistor FG DRAM cells, this new memory cell has a much simpler configuration with only one transistor. Besides, its write speed is improved by introducing an integrated gated diode and state "1" can be self-refreshable. In this paper, the device configuration, the DRAM application feasibility, the self-refreshing ability, and the nondestructive read are discussed.
|
|
