400cm^2 a-Si/a-Si 叠层太阳电池的研究

RESEARCH ON 400cm 2 a Si/a Si TANDEM SOLAR CELLS

以全部国产化装备和工业用原材料，以简单铝背电极制备出初始效率为８．２８％，经室外阳光照射一年后稳定效率为７．３５％，面积为２０ｃｍ×２０ｃｍ，有效面积为３６０ｃｍ２ａ－Ｓｉ／ａ－Ｓｉ叠层太阳电池。主要制备技术措施：（１）ＴＣＯ／ｐ界面接触特性的改善；（２）μｃ－ＳｉＣ∶Ｈ／ａ－ＳｉＣ∶Ｈ复合窗口层技术；（３）ｐ／ｉ界面Ｈ处理；（４）高质量本征ａ－Ｓｉ∶Ｈ材料；（５）优良的ｎ１／ｐ２隧道结；（６）最佳电池结构设计等。

Using domestic made equipment and industrial materials some 400cm 2 a Si/a Si tandem solar cells have been fabricated in our laboratory with initial efficiency of 8.28% and stable efficiency of 7.35%.Main technologies are as following:(1)improvement of the contact characteristics of TCO/p interface;(2)technology of the μc SiC∶H/a SiC∶H dual window layer;(3)hydrogen plasma treatment of the p/i interface;(4)high quality intrinsic a Si∶H materials;(5)excellent n 1/p 2 tunnel junction;(6)optimized design of cell structure,and so on.