The optical excitation of organic semiconductors not only generates charge-neutral electron-hole pairs (excitons), but also charge-separated polaron pairs with high yield. The microscopic mechanisms ...

In Xinjiang, people of all ethnic groups are encouraged to pair up and make friends with each other. With the help of Liu Liqun, an official at Xinjiang Energy Co., Danagul Yasen's family now has ...

SINCE early 1963, observations of ionospheric absorption have been conducted at three pairs of magnetically conjugate stations situated at high magnetic latitude. The positions of the stations are ...