title: Hybrid energy harvester based on nanopillar solar cells and PVDF nanogenerator.
abstract: A tandem device which integrates a PVDF nanogenerator and silicon (Si) nanopillar solar cell is fabricated. The Si nanopillar solar cell was fabricated using a mask-free plasma etching technique and annealing process. The PVDF nanogenerator was stacked on top of the Si nanopillar solar cell using a spinning method. The optical properties and the device performance of nanowire solar cells have been characterized, and the dependence of device performance versus annealing time or method has been investigated. Furthermore, the PVDF nanogenerator was operated with a 100 dB sound wave and a 0.8 V peak to peak output voltage was generated. This tandem device can successfully harvest energy from both sound vibration and solar light, demonstrating its strong potential as a future ubiquitous energy harvester.
authors.affiliation: SKKU Advanced Institute of Nano Technology, Sungkyunkwan University 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, Korea.
authors.forename: Dae-Yeong
authors.initials: DY
authors.lastname: Lee
authors.forename: Hyunjin
authors.initials: H
authors.lastname: Kim
authors.forename: Hua-Min
authors.initials: HM
authors.lastname: Li
authors.forename: A-Rang
authors.initials: AR
authors.lastname: Jang
authors.forename: Yeong-Dae
authors.initials: YD
authors.lastname: Lim
authors.forename: Seung Nam
authors.initials: SN
authors.lastname: Cha
authors.forename: Young Jun
authors.initials: YJ
authors.lastname: Park
authors.forename: Dae Joon
authors.initials: DJ
authors.lastname: Kang
authors.forename: Won Jong
authors.initials: WJ
authors.lastname: Yoo