Review Article

Nano Research

, Volume 2, Issue 11, pp 829-843

Open Access This content is freely available online to anyone, anywhere at any time.

Challenges and prospects of nanopillar-based solar cells

  • Zhiyong FanAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Daniel J. RuebuschAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Asghar A. RathoreAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Rehan KapadiaAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Onur ErgenAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Paul W. LeuAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory
  • , Ali JaveyAffiliated withDepartment of Electrical Engineering and Computer Sciences, University of California at BerkeleyBerkeley Sensor and Actuator Center, University of California at BerkeleyMaterials Sciences Division, Lawrence Berkeley National Laboratory Email author 

Abstract

Materials and device architecture innovations are essential for further enhancing the performance of solar cells while potentially enabling their large-scale integration as a viable source of alternative energy. In this regard, tremendous research has been devoted in recent years with continuous progress in the field. In this article, we review the recent advancements in nanopillar-based photovoltaics while discussing the future challenges and prospects. Nanopillar arrays provide unique advantages over thin films in the areas of optical properties and carrier collection, arising from their three-dimensional geometry. The choice of the material system, however, is essential in order to gain the advantage of the large surface/interface area associated with nanopillars with the constraints different from those of the thin film devices.

Keywords

Nanopillar-based photovoltaics solar cells nanowires (NWs)