摘要：Combining a progressive tandem junction design with a unique Si nanowire(SiNW)framework paves the way for the development of high‐onset‐potential photocathodes and enhancement of solar hydrogen ***,a radial tandem junction(RTJ)thin film water‐splitting photo‐cathode has been demonstrated experimentally for the first *** photocathode is directly fab‐ricated on vapor‐liquid‐solid‐grown SiNWs and consists of two radially stacked p‐i‐n junctions,featuring hydrogenated amorphous silicon(a‐Si:H)as the outer absorber layer,which absorbs short wavelengths,and hydrogenated amorphous silicon germanium(a‐SiGe:H)as the inner layer,which absorbs long *** randomly distributed SiNW framework enables highly efficient light‐trapping,which facilitates the use of very thin absorber layers of a‐Si:H(~50 nm)and a‐SiGe:H(~40 nm).In a neutral electrolyte(pH=7),the three‐dimensional(3D)RTJ photocathode delivers a high photocurrent onset of 1.15 V *** reversible hydrogen electrode(RHE),accompanied by a photocurrent of 2.98 mA/cm^(2) at 0 V ***,and an overall applied‐bias photon‐to‐current effi‐ciency of 1.72%.These results emphasize the promising role of 3D radial tandem technology in developing a new generation of durable,low‐cost,high‐onset‐potential photocathodes capable of large‐scale implementation。

摘要：报道了用氢化非晶硅（α－Ｓｉ：Ｈ）ｐｉｎ二极管作光敏层，扭曲向列型液晶（ＴＮＬＣ）作电光调制层的光寻址空间光调制器（ＯＡＳＬＭ）的设计、制作与性能测试．结果表明制得的（ＯＡＳＬＭ）分辨率大于２０ｌｐ／ｍｍ；在３００ｌｕｘ白光写入时对比度高于２５：１；白光写入灵敏度约３ｌｕｘ。

摘要：报道了自行设计的将二维Ｄａｍｍａｎｎ光栅和Ｆｒｅｓｎｅｌ波带板集成为一体的同时具有分束和聚焦功能的二元位相型光分束器，并用等离子体增强化学气相淀积法（ＰＥＣＶＤ）制备的非晶氨化硅（α－ＳｉＮｘ：Ｈ）薄膜制作了这样的元件，成功地实现了设计的功能，分束阵列为３×３，焦距为１８ｃｍ，分束后的光强分布相对误差小于５％。