2023年12月31日发(作者：小米1什么时候上市的)

Cu（In,Ga）Se2太阳电池结构中的侧向光伏效应研究及光位敏探测器应用

摘要：Cu（In,Ga）Se2太阳电池是一种新型的薄膜太阳能电池，在光伏领域得到了广泛关注。本研究基于该太阳电池结构中的侧向光伏效应，探究了其光位敏探测器的应用。首先，通过理论模拟分析，研究了Cu（In,Ga）Se2太阳电池结构中的侧向光伏效应的物理机制和影响因素。其次，采用实验方法，对该太阳电池结构中的侧向光伏效应和光位敏探测器的性能进行了研究和测试。最后，基于研究结果，提出了改进该太阳电池结构的方案，以实现更高的光电转换效率和光电探测灵敏度。本文的研究成果为Cu（In,Ga）Se2太阳电池结构的应用和光电转换领域的发展提供了有力的理论和实验支持。

关键词：Cu（In,Ga）Se2太阳电池，侧向光伏效应，光位敏探测器，光电转换效率，光电探测灵敏度

Abstract: Cu (In, Ga) Se2 solar cells are a new type

of thin-film solar cells, which have attracted wide

attention in the field of photovoltaics. Based on the

lateral photovoltaic effect in the structure of this

solar cell, this study explores the application of its

photo-position sensitive detector. First, the physical

mechanism and influencing factors of the lateral

photovoltaic effect in the structure of Cu (In, Ga)

Se2 solar cells were analyzed by theoretical

simulation. Secondly, the performance of the lateral

photovoltaic effect and photo-position sensitive

detector in this solar cell structure were studied and

tested by experimental methods. Finally, based on the

research results, a scheme for improving the structure

of the solar cell was proposed to achieve higher

photoelectric conversion efficiency and photoelectric

detection sensitivity. The research results of this

paper provide strong theoretical and experimental

support for the application of Cu (In, Ga) Se2 solar

cell structure and the development of photoelectric

conversion field.

Keywords: Cu (In, Ga) Se2 solar cell, lateral

photovoltaic effect, photo-position sensitive detector,

photoelectric conversion efficiency, photoelectric

detection sensitivit

Cu (In, Ga) Se2 solar cells have been widely

recognized as one of the most promising candidates for

next-generation photovoltaic devices due to their high

photoelectric conversion efficiency and excellent

performance in low light conditions. However, there is

still room for further improvement in terms of their

photoelectric conversion efficiency and photoelectric

detection sensitivity.

To address this issue, researchers have proposed a

novel approach, which utilizes the lateral

photovoltaic effect (LPE) to enhance the performance

of Cu (In, Ga) Se2 solar cells. The LPE is a well-known phenomenon in which a lateral voltage is

generated across a semiconductor material when it is

illuminated by light. This effect has been extensively

investigated in various types of semiconductors, such

as silicon, germanium, and III-V compounds.

In this research, the LPE was observed in Cu (In, Ga)

Se2 solar cells, and it was found that the LPE signal

was strongly dependent on the position of the light

spot on the surface of the solar cell. Based on these

observations, the researchers proposed a novel

structure that utilizes the LPE effect to enhance the

photoelectric conversion efficiency and photoelectric

detection sensitivity of Cu (In, Ga) Se2 solar cells.

The proposed structure consists of two layers of Cu

(In, Ga) Se2 absorber materials, with a thin layer of

metal (e.g., gold) inserted between them. The metal

layer acts as a barrier to separate the two absorber

layers, creating a lateral electric field in the

region near the metal/absorber interfaces. When light

is incident on the solar cell, the LPE effect

generates a lateral voltage across the absorber layers,

leading to an enhancement in the photoelectric

conversion efficiency and photoelectric detection

sensitivity of the device.

The researchers experimentally verified the

effectiveness of this approach by fabricating and

testing the proposed structure. The results showed

that the LPE-enhanced Cu (In, Ga) Se2 solar cell

exhibited a significant improvement in both the

photoelectric conversion efficiency and photoelectric

detection sensitivity compared to conventional Cu (In,

Ga) Se2 solar cells.

In summary, this research provides strong theoretical

and experimental support for the application of the

LPE effect in enhancing the performance of Cu (In, Ga)

Se2 solar cells. The proposed structure offers a

promising way to achieve higher photoelectric

conversion efficiency and photoelectric detection

sensitivity for next-generation photovoltaic devices

Furthermore, the study also sheds light on the

potential of using LPE as a strategy to enhance the

performance of other types of solar cells. For

instance, LPE can be applied to other thin-film solar

cells, such as cadmium telluride (CdTe), to improve

their efficiency and sensitivity.

In addition, the research indicates the importance of

optimizing the thickness and doping concentration of

the LPE layer to achieve optimal performance. The

thickness of the LPE layer affects the distribution of

the electric field and carrier concentration, while

the doping concentration affects the concentration of

free carriers and the degree of band bending.

Moreover, the study emphasizes the need for further

research to fully understand the underlying mechanisms

of the LPE effect in enhancing the performance of

solar cells. For instance, future studies can

investigate the influence of temperature, illumination

intensity, and device structure on the LPE effect.

Additionally, more in-depth analysis can be conducted

to investigate the carrier transport properties and

interfacial properties of the LPE layer.

Overall, the research on the LPE effect in Cu (In, Ga)

Se2 solar cells holds promising implications for the

development of high-performance solar cells. By

improving the efficiency and sensitivity of solar

cells, LPE can contribute to advancing the global

transition towards cleaner and more sustainable energy

sources

In addition to the LPE effect in Cu (In, Ga) Se2 solar

cells, there are other research areas that hold

promising implications for the development of high-performance solar cells.

One area of research is in the development of

alternative materials for solar cells. Traditional

solar cells are often made of silicon or thin-film

materials such as CdTe and Cu (In, Ga) Se2. However,

these materials have limitations in terms of their

efficiency, durability, and environmental impact. As a

result, researchers have been investigating new

materials such as perovskites, organic semiconductors,

and quantum dots.

Perovskite solar cells, in particular, have gained

significant attention in recent years due to their

high efficiencies and low cost. Perovskites are a type

of crystal structure that can be made from a variety

of different materials. When used in solar cells,

perovskites can absorb light and generate electrical

current. Despite their promise, perovskite solar cells

still face many challenges in terms of their stability,

scalability, and toxicity.

Another area of research is in the development of

tandem solar cells, which involve stacking multiple

layers of different materials on top of each other.

Tandem solar cells can achieve higher efficiencies

than single-junction solar cells by using multiple

layers to absorb different parts of the solar spectrum.

Some of the most promising materials for tandem solar

cells include silicon/perovskite and perovskite/Cu (In,

Ga) Se2.

A third area of research is in the development of new

device architectures and manufacturing processes. One

example is the use of flexible and/or transparent

substrates, which can enable solar cells to be

integrated into a wider range of applications such as

wearable devices and building facades. Another example

is the use of printing and/or roll-to-roll processes,

which can reduce the cost and increase the scalability

of solar cell manufacturing.

Overall, the field of solar cell research is rapidly

evolving, with many promising avenues for improving

the efficiency, durability, and scalability of solar

cells. As the global demand for clean and sustainable

energy continues to grow, the development of high-performance solar cells will play a critical role in

enabling the transition towards a more sustainable

future

In conclusion, solar cells have enormous potential as

a clean and sustainable source of energy. The

efficiency and cost of solar cells are primary

research focuses for improving their scalability,

affordability, and practical applications. Innovative

approaches such as hybrid solar cells, multi-junction

solar cells, and perovskite solar cells have already

shown remarkable progress in increasing the

efficiencies of solar cells. The development of novel

materials, such as quantum dots and biomimetic

materials, can also offer new opportunities for

improving solar cell performance. In addition, the use

of scalable manufacturing techniques like printing and

roll-to-roll processes can reduce the cost and

increase the scalability of solar cell production.

Overall, continuous research and development in the

field of solar cell technology will play a crucial

role in meeting the growing demand for clean and

sustainable energy, and in driving the transition to a

more sustainable future