double-doped transistor

例句：

1. 1. The double-doped structure of the material is responsible for its unique properties.
   这种材料的双掺杂结构是其独特性质的原因。
2. 2. The double-doped silicon solar cells have shown significant improvements in efficiency.
   双掺杂硅太阳能电池在效率上已显示出显著提高。
3. 3. The double-doped layer has been found to enhance the device's performance.
   研究发现，双掺杂层能提升器件的性能。