Question 19N.3.hl.TZ0.20d(ii)
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.3.hl.TZ0.20d(ii) |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | d(ii) | Adapted from | N/A |
A proton-exchange membrane (PEM) fuel cell uses pure hydrogen gas as the fuel and a proton exchange membrane as the electrolyte.
A dye-sensitized solar cell (DSSC) uses light energy to produce electricity.
Suggest an advantage of the DSSC over silicon-based photovoltaic cells.
[1]
Any one of:
cheaper/ease of manufacture
OR
plentiful and renewable resources «to construct DSSC cells» ✔
use light of lower energy/lower frequency/longer wavelength
OR
use of nanoparticles provides large surface area for exposure to sunlight/sun/light
OR
can absorb better under cloudy conditions ✔
operate at lower «internal» temperatures
OR
better at radiating heat away «since constructed with thin front layer of conductive plastic compared to glass box in photovoltaic cells» ✔
better conductivity ✔
more flexible/durable ✔
NOTE: Accept “lower mass/lighter «so greater flexibility to integrate into windows etc.»” OR “greater power-conversion efficiency «with latest DSSC models»”.
