Thermal to electric conversion with diodes

In summary, the conversation discusses the potential of using diodes to convert heat into electricity and whether quantum tunneling effects are necessary for this process. It is mentioned that there is a well-known phenomenon of thermal current in diodes, which increases with temperature rise. Scientists have experimented with using quantum tunneling diodes for this purpose, but it is questioned whether this is necessary as traditional solar cells are efficient in converting light into electricity without quantum effects. The conversation also mentions that other electrical components exhibit thermal noise, such as resistors and capacitors.
  • #1
Stanley514
411
2
There is well known phenomenon such as thermal current in diodes which is 26millivolts at room temperature.And it increases with temperature rise.How good are diodes in converting heat to electricity and what qualities should have diode for perfect heat to electricity conversion?I read that scientists have experimented with quantum tunneling diodes for this purpose and claimed to achieve some results.
But do they really need quantum tunneling effects?It seems to me that usual solar cells convert light into electricity in similar way and there is no need for quantum
effects.Diodes in solar cells look quite efficient and don't seem to be a serious limitation.
 
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  • #2
what "well known phenomena" are you referring to...thermal noise? other electrical components exhibit that...like resistors, capacitors,etc.
 

1. What is thermal to electric conversion with diodes?

Thermal to electric conversion with diodes is a process that involves converting heat energy into electrical energy using semiconductor diodes. This process is based on the Seebeck effect, which states that when a temperature difference is applied to two different conductors connected to a circuit, it will generate an electric current.

2. How do diodes convert thermal energy into electricity?

Diodes used for thermal to electric conversion are typically made of two different types of semiconductors, such as P-type and N-type. When one side of the diode is exposed to a heat source, it creates a temperature difference between the two sides, causing electrons to flow from the hot side to the cold side, generating electricity.

3. What are the applications of thermal to electric conversion with diodes?

Thermal to electric conversion with diodes has various applications, including thermoelectric generators for powering devices in remote or off-grid locations, waste heat recovery systems for industrial processes, and even in spacecraft for converting heat from radioactive decay into electricity.

4. What are the advantages of using diodes for thermal to electric conversion?

One of the main advantages of using diodes for thermal to electric conversion is their efficiency. They can convert a wide range of temperature differences into electricity with high efficiency. Additionally, they have no moving parts, making them reliable and maintenance-free.

5. Are there any limitations to thermal to electric conversion with diodes?

While diodes have many advantages, they also have some limitations. One of the main limitations is their low power output, which makes them more suitable for low-power applications. They also require a significant temperature difference to generate electricity, which may not always be achievable in certain environments.

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