Recent Progress in Semitransparent Organic and Perovskite Solar Cells

Dong, Yiman; Gao, Hongyu; Yu, Runnan; Gong, Yongshuai; Ma, Zongwen; Tan, Zhan’ao

doi:10.1002/pssa.202100731

Cited by 7 publications

(5 citation statements)

References 116 publications

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“…It is important to highlight the importance of optical simulations to optimize the optical and electrical characteristics of a STPV. [ 41 ] TMM model [ 293 ] and finite‐difference time domain [ 171,294 ] methods are two of the most common methods to simulate the transmission/reflection spectrum of the complete device including the additional layers for light management discussed above. These methods use simple input parameters: thicknesses ( d j where j = 1, 2, …, m) and complex refractive indices, n j + ik j ( n and k are the refractive index and absorption coefficient of the material) of each layer and should prove to be a useful tool for all STPV research.…”

Section: Device Engineering In Stpvsmentioning

confidence: 99%

“…These methods use simple input parameters: thicknesses ( d j where j = 1, 2, …, m) and complex refractive indices, n j + ik j ( n and k are the refractive index and absorption coefficient of the material) of each layer and should prove to be a useful tool for all STPV research. [ 41 ]…”

Section: Device Engineering In Stpvsmentioning

confidence: 99%

“…Dong et al. (2022) [ 41 ] reviewed the progress of active layer materials, TTEs, and strategies for performance enhancement of STOPVs and STPSCs while discussing the respective challenges. Apart from these reviews comparing multiple STPV technologies (types), targeted reviews focusing on one specific technology (OPVs, PSCs, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Lee et al (2020) [40] focused on neutral-colored STPVs based on c-Si or LSCs and outlined the practical criteria for evaluating the non-Si STPV technologies. Dong et al (2022) [41] reviewed the progress of active layer materials, TTEs, and strategies for performance enhancement of STOPVs and STPSCs while discussing the respective challenges. Apart from these reviews comparing multiple STPV technologies (types), targeted reviews focusing on one specific technology (OPVs, PSCs, etc.)…”

Section: Introductionmentioning

confidence: 99%

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Recent Progress in Materials and Device Design for Semitransparent Photovoltaic Technologies

Kumar,

You,

Vomiero

2023

Advanced Energy Materials

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Semitransparent photovoltaic (STPV) solar cells offer an immense opportunity to expand the scope of photovoltaics to special applications such as windows, facades, skylights, and so on. These new opportunities have encouraged researchers to develop STPVs using traditional thin‐film solar cell technologies (amorphous‐Si, CdTe, and CIGS or emerging solar cells (organic, perovskites, and dye‐sensitized). There are considerable improvements in both power conversion efficiency (PCE) and semitransparency of these STPV devices. This review studies the device structure of state‐of‐the‐art STPV devices and thereby analyzes the different approaches toward maximizing the product of PCE and average visible transmittance. The origins of PCE losses during the opaque‐to‐semitransparent transition in the different STPV technologies are discussed. In addition, critical practical aspects relevant to all STPV devices, such as compatibility of the top transparent electrode with the device structure, buffer layer optimization, light management engineering, scale‐up, and stability, are also reported. This overview is expected to facilitate researchers across different technologies to identify and overcome the challenges toward achieving higher light utilization efficiencies in STPVs.

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Section: Device Engineering In Stpvsmentioning

confidence: 99%

Section: Device Engineering In Stpvsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent Progress in Materials and Device Design for Semitransparent Photovoltaic Technologies

Kumar,

You,

Vomiero

2023

Advanced Energy Materials

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“…Compared with traditional photovoltaic industry, semitransparent organic photovoltaics (ST-OPVs) have great prospect due to their chromaticity adjustability, large-area compatibility, and low cost. [1][2][3][4][5][6] In conventional organic photovoltaics (OPVs), the bulk heterojunction (BHJ) based on polymer donor and nonfullerene acceptors is the most typical active layer design, which has achieved power conversion efficiency (PCE) higher than 18%. [7][8][9][10][11][12] However, studies of BHJ ST-OPVs have faced bottle-as temperature, atmosphere, deposition time, organic solvent, solvent additive, and so on.…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Sequential Deposition Strategy for High Performance Pseudoplanar Heterojunction Semitransparent Organic Photovoltaics

Fan

Guo

et al. 2023

Advanced Optical Materials

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neck of the balance between photoharvest PCE and average visible transmittance (AVT). Series of strategies have been proposed to improve the PCE and AVT, such as ternary strategy with ultranarrow bandgap materials as the third component, [13] adjusting the thickness of active layers to balance the AVT and PCE, [14] adjusting the weight ratio of donor to acceptor, [15] layer-by-layer strategy, [16] and so on. [17][18][19][20][21] Besides, optimizing morphology of active layer was another efficient strategy to improve performance. Song et al. reported BHJ OPVs with PCE of 18.01% by solvent annealing. ST-OPVs were fabricated with same strategy with PCE of 13.07% at AVT of 19.33%. [7] Although the performance of opaque devices is greatly improved, the corresponding strategies applied to translucent devices have not achieved good results. The key reason is that BHJ structure requires donor (D) and acceptor (A) keeping fixed ratio, for minor adjustment of D:A ratio will have a great impact on interpenetrating networks and result in low performance. Thus, with high visible absorbance polymer donor, it is hard to realize enhancement of AVT with slight PCE loss. Promotion of BHJ ST-OPVs has fallen into bottleneck.Recently, pseudoplanar heterojunction (PPHJ) structure shows great potential application in ST-OPVs. [22][23][24][25] Donor and acceptor have gradient distribution in PPHJ structure. It was proved that PPHJ structure ensures efficient dissociation and diffusion of excitons as well as charge transporting. [26,27] In theory, slight reduction of donor thickness will get higher AVT with slight PCE loss. Hao et al. reported sequential deposition (SD) processing PPHJ ST-OPVs with PCE of 12.22% and AVT of 22.2%. [25] Their research also proved that as thickness of the active layer reduced, PCE of PPHJ devices decrease slower than BHJ devices, which means that it is valid to optimize PPHJ devices by only optimizing donor. SD is the most common strategy to form PPHJ structure. Most researchers deposit acceptor on donor film, where donor and acceptor molecular diffuse together at the interface region to form conventional PPHJ structure. [28,29] To ensure valid molecular diffusion, the solvent of top layer should have proper solubility for bottom layer. SD process is strongly affected by many factors, such Semitransparent organic photovoltaics (ST-OPVs) have great application potential in photovoltaic buildings and wearable devices. Studies have proved that power conversion efficiency (PCE) and average visible transmittance (AVT) reveal more balanced in pseudoplanar heterojunction (PPHJ) structure than in bulk heterojunction (BHJ) structure. An interesting approach named low temperature sequential deposition (LTSD)-spin-coating the small molecule acceptor (A) Y6 on polymer donor (D) PM6-is proposed to form an efficient PPHJ structure. In the LTSD process, small molecule Y6 will diffuse through amorphous PM6 layer which means that Y6 finally aggregates at the bottom of active layer and results in vertical gradient concentrat...

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High light utilization of multi-terminal tandem device based on semitransparent organic solar cells

Qiao

Sun

et al. 2023

J Mater Sci: Mater Electron

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Recent Progress in Semitransparent Organic and Perovskite Solar Cells

Cited by 7 publications

References 116 publications

Recent Progress in Materials and Device Design for Semitransparent Photovoltaic Technologies

Recent Progress in Materials and Device Design for Semitransparent Photovoltaic Technologies

Low Temperature Sequential Deposition Strategy for High Performance Pseudoplanar Heterojunction Semitransparent Organic Photovoltaics

High light utilization of multi-terminal tandem device based on semitransparent organic solar cells

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