Science Advances

This PDF file includes:

• section S1. Definition of the device parameter
  
• section S2. Preparation and characterization of (8, 4) and (8, 3) and highsemiconducting-purity CNTs
  
• section S3. Analysis of the Au-strip waveguide mode
  
• section S4. PL spectra of the nonchirality-selected and (8, 4) and (8, 3) CNTs
  
• section S5. PL and EL spectra of the (8, 4) and (8, 3) CNTs-based emitter
  
• section S6. Propagation loss of the Au-strip waveguide versus vacuum wavelength
  
• section S7. Analysis of the FWHM of the SPP source
  
• section S8. Far-field emission of the LSPs
  
• section S9. Structure and performance of the CNT-based PV cascading detector
  
• section S10. The reason to select cascading SPP detector
  
• section S11. The near-field enhancement of the Au-strip waveguide
  
• section S12. Three-dimensional FDTD calculation of the SPP waveguide mode
  
• section S13. Calculation of the experimental propagation loss
  
• section S14. Analysis of the transmitted SPP energy in the detector
  
• section S15. SEM image of S3 indicating the exit of the source as P₁ and the entrance the detector as P2
  
• section S16. Calculation of the conversion efficiency
  
• section S17. Estimation of the power to generate 8 mV photovoltage
  
• section S18. Analysis of the coupling efficiency as a function of CNT orientation versus Au-strip waveguide
  
• fig. S1. Definition of the channel length and width in the PIC system.
  
• fig. S2. Raman spectra of (8, 4) and (8, 3) and high–semiconducting purity CNTs.
  
• fig. S3. Mode distribution of the Au-strip waveguide.
  
• fig. S4. PL spectra.
  
• fig. S5. PL and EL spectra of the (8, 4) and (8, 3) CNT-based emitter.
  
• fig. S6. Propagation loss of the Au-strip waveguide versus vacuum wavelength.
  
• fig. S7. Analysis of the LSPs induced far-field emission.
  
• fig. S8. Structure and performance of the CNT cascading detector.
  
• fig. S9. Characteristics of the single-channel PIC.
  
• fig. S10. Near-field enhancement of the Au-strip waveguide.
  
• fig. S11. EL spectrum collected at the end of the detector.
  
• fig. S12. SEM image of S3 indicating the exit of the source as P₁ and the entrance of the detector as P₂.
  
• fig. S13. Photoresponse of the cascading detector under normal incident IR illumination.
  
• fig. S14. Schematic of the CNT orientation versus Au-strip waveguide direction.
  
• table S1. Averaged diameter, bandgap, and absorption range of (8, 4) and (8, 3) and high–semiconducting purity CNTs.
  
• References (43–45)

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