Nigerian author Chimamanda Ngozi Adichie has been named winner of the Orange Broadband Prize for Fiction. She beat five other contenders for the £30,000 women-only award, including Kiran Desai, shortlisted for her Booker Prize winner The Inheritance of Loss. Adichie's novel, Half of a Yellow Sun, is her second work and set during the Biafran War of the 1960s.