Bifacial heterojunction intrinsic thin layer solar cells as a bioFET supply

Cahyaning Nur Karimah, P. Retno Wigajatri, Tomy Abuzairi, Nji Raden Poespawati

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Solar cells design as an independent supply for biosensor Field Effect Transistor (bioFET) is required to overcome electricity supply. Integrating bioFET with solar cells generates some benefits that include efficiency, low costs, and environmental friendly. In the design of solar cells, the bifacial structure of Hetero-junction Intrinsic Thin layer (HIT) was selected, and the optimization on the structure was carried out with the help of AFORS-HET software. The optimization of such a structure was undertaken by laying the intrinsic thin layers on both sides of the substrate or Transparent Conductive Oxides (TCO) that were placed on the front and back sides of the cell. In order to minimize the recombination, a back-surface field (BSF) was also put in the rear cell of the structure. Research on bifacial HIT structure needs to be done to select a solar cells structure that is most suitable with the voltage required by the bioFET. There are five structures modeling had done to have suitable structure using AFORS-HET. The entire five structures had been simulated on equilibrium mode, and they generally have shown to possess a band alignment type II, namely staggered heterojunction. The simulation results in equilibrium mode obtained one structure which the smallest ΔEC and ΔEV among the other four structures, that is TCO / a-Si:H(p) / a-Si:H(i) / c-Si(n) / a-Si:H(i) / a-Si:H(n+) / TCO / Al with ΔEC and ΔEV, 0.15006798 eV and 0.445920 eV respectively. This 2nd structure also has a smallest barrier in ΦBn= 0.6791392 eV and ΦBp= 0.08314 eV, respectively. The built-in potential of the 2nd structure is 1.13 V. This structure has JSC=0.083 A/cm2 and VOC = 0.313 V. The deviation between built-in potential and VOC is realize in 0.817. The maximum current and maximum voltage are Jm = 0,076 A/cm2 and Vm = 0,25 V respectively, so the maximum power of this structure is 0.019 Watt/cm2. Therefore the 2nd structure is the most appropriate structure to fulfill the bioFET supply.

Original languageEnglish
Title of host publicationQiR 2017 - 2017 15th International Conference on Quality in Research (QiR)
Subtitle of host publicationInternational Symposium on Electrical and Computer Engineering
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages69-73
Number of pages5
ISBN (Electronic)9781509063970
DOIs
Publication statusPublished - 5 Dec 2017
Event15th International Conference on Quality in Research: International Symposium on Electrical and Computer Engineering, QiR 2017 - Nusa Dua, Bali, Indonesia
Duration: 24 Jul 201727 Jul 2017

Publication series

NameQiR 2017 - 2017 15th International Conference on Quality in Research (QiR): International Symposium on Electrical and Computer Engineering
Volume2017-December

Conference

Conference15th International Conference on Quality in Research: International Symposium on Electrical and Computer Engineering, QiR 2017
CountryIndonesia
CityNusa Dua, Bali
Period24/07/1727/07/17

Keywords

  • BioFET
  • band alignment
  • bifacial HIT
  • solar cells

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