This document discusses a batteryless phone that is powered by harvesting ambient light and radio frequency (RF) waves using a photo diode. The phone's only function is calling. It operates by using the RF waves to convert the harvested energy to direct current power. Solar cells in the phone work by using a P-N junction diode made of silicon or germanium to generate open spaces for light to fall on the P layer and excite electrons from the valence to conduction band. Advantages include conserving electricity, saving time, and low power consumption with no charging issues. Limitations are limited range, reliance on solar cell or ambient light, and lack of additional features. Future areas of development could include increasing the range, adding encryption and
3. INTRODUCTI
ON
3
Even the companies that phones at
sell smart
rates have the issue of battery’s
phenomenal
performance.
The performance is better as compared to others, but it is
still a mystery if discussed in terms of long life.
4. What is batteryless
phone?
4
Needed no battery.
Phone used to only calling function.
device uses a minute photo diode to harvest energy from the
ambient light or RF sources.
It operate the RF wave to convert DC power.
6. How solar cell
works? which is
Solar cell constitutes of P-N junction diode,
assembled from Silicon and Germanium.
This process constructs open space for light to fall on P layer
and hence underlying the P-N junction.
The bottom of N layer comprises of current assembling
electrode.
When a light photon arrives at the junction, they exhilarate
electrons from valence band to conduction band.
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11. CONCLUSI
ON
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It was extremely astonishing to witness that a group of
researchers have finally developed a phone that uses no
power.
which means the phone has no battery and harnesses energy
from ambient signals and light sources.
That convert light and signal strength into a current which is
furthermore converted into few microwatts of power.
With the phone, we can just dial a number and call to another
person.
