东方古州多宝藏——青州市博物馆介绍

青州是华夏古九州之一,近七千年的人类历史为这方宝地留下众多的遗迹杰作和数不尽的文物宝藏。 青州博物馆是一座富有地方特色的综合性历史博物馆,始建于1959年。原址系清代文华殿大学士冯溥的宗祠改建。1984年迁建新馆,占地39亩,建筑面积一万平方米。博物馆整体设计为一古典式民族建筑群,展厅分别为单檐、重檐歇山式建筑,四围合抱,其间以回廊相连规模恢宏、结构端雅。厅廊均以金色琉璃瓦覆顶,檐牙高啄,金碧辉煌,展现出浓郁的传统色彩和历史氛围。馆址座落在风光秀丽的古城西北角,雄踞于阳溪湖东岸。

Annealing optimization of hydrogenated amorphous silicon suboxide film for solar cell application

We investigate a passivation scheme using hydrogenated amorphous silicon suboxide （a-SiOx ：H） film for industrial solar cell application. The a-SiOx ：H films were deposited using plasma-enhanced chemical vapor deposition （PECVD） by decomposing nitrous oxide, helium and silane at a substrate temperature of around 250 ℃. An extensive study has been carried out on the effect of thermal annealing on carrier lifetime and surface recombination velocity, which affect the final output of the solar cell. Minority carrier lifetimes for the deposited a-SiOx ：H films without and with the thermal annealing on 4 Ω-cm p-type float-zone silicon wafers are 270 μs and 670μs, respectively, correlating to surface recombination velocities of 70 cm/s and 30 cm/s. Optical analysis has revealed a distinct decrease of blue light absorption in the a-SiOx ：H films compared to the commonly used intrinsic amorphous silicon passivation used in solar cells. This paper also reports that the low cost and high quality passivation fabrication sequences employed in this study are suitable for industrial processes.

山东青州龙兴寺窖藏佛教造像

1996年10月7日至15日,山东省青州市博物馆在其南邻一建筑工地发现并抢救清理了原龙兴寺一大型佛教造像窖藏。山东青州龙兴寺遗址是中国目前所知唯一的一处布置清晰、保存较好的唐代以前的大型寺院遗址,有着重要的历史和科学价值。龙兴寺遗址窖藏造像的存放并非杂乱无章,而是具有一定的规律。