How to Accurately Report Transparent Solar Cells

Yang, Chenchen; Liu, Dianyi; Bates, Matthew; Barr, Miles C.; Lunt, Richard R.

doi:10.1016/j.joule.2019.06.005

Cited by 199 publications

(222 citation statements)

References 11 publications

Supporting

Mentioning

210

Contrasting

Order By: Relevance

“…The CIELAB color space coordinates ( a *, b *) are key figures of merit to quantify the rendered color fidelity of the transmitted light in the window industry. The incident AM 1.5G is at the origin (0, 0) (as neutral) and the ( a *, b *) positions of the TLSCs are plotted in Figure 3B 4,22. Since there is a tail absorption of the NIR absorption peak that extends into VIS (mostly in red), the TLSCs all have negative values of a * and b *.…”

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 97%

“…Therefore, NIR photons between 675 nm and the absorption cut‐off of the edge‐mounted PV cell can be utilized for power generation, and this range coincides with the peak of the incident AM 1.5G photon flux. Moreover, even with tail absorption in the red‐NIR below 675 nm, the resulting blue/green tint is often more visually acceptable than yellow/red tinting, which offers more design freedom for NIR selective‐harvesting luminophores 1,2,22…”

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 99%

“…The photon balance check for the remaining TLSC devices involved are shown in Note S3 (Supporting Information). We note that the highest EQE LSC (λ) (acquired at the smallest d , rather than the average in Figure 2B) in the position‐dependent EQE LSC spectra is used in this relation to ensure that the whole series satisfy the photon balance 22…”

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 99%

See 2 more Smart Citations

High‐Performance Near‐Infrared Harvesting Transparent Luminescent Solar Concentrators

Yang

Moemeni

Bates

et al. 2020

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

the architectural envelope as they become more scalable, converting new and existing infrastructure into power-generating sources and dramatically reducing the electrical loss in transmission. [4,5] Transparent luminescent solar concentrators (TLSCs), a key TPV technology, optically shift the solar energy conversion by photoluminescence (PL) that is transported optically (by total internal reflection) to edge-mounted PV cells ( Figure 1A). [1] Due to the absence of electrodes, busbars, and collection grids over the solar harvesting area, the device structure is largely simplified, which enables LSC/TLSC devices to achieve the highest levels of transparency and aesthetics. [4,5] In the past decade, quantum dots, [6][7][8] nanoclusters, [9] and rare-earth ion complexes [10][11][12][13] have been widely investigated as the luminophores in LSC/TLSC systems. Most of these works focus on 1) the improvement of quantum yield (QY), [5,14,15] 2) the modulation of the absorption and emission spectra to minimize the reabsorption loss, [7,8,10,16] and 3) the enhancement of light absorption by matching the absorption spectrum of the luminophores with the peak of the incident solar spectrum. [17][18][19][20] However, the continuous-band absorption characteristics of these luminophores limit their absorption cut-off to ≈435 nm, if a high aesthetic quality and transparency is targeted. Bandgaps beyond 440 nm can result in rapid drops in average visible transmittance (AVT) and color rendering index (CRI). [1,2,21] Utilizing wavelength selective absorbers makes it possible to harvest just the UV or NIR. As selective absorption redshifts beyond 675 nm, the CRI and AVT reach a maximum. [1,2] Therefore, NIR photons between 675 nm and the absorption cut-off of the edge-mounted PV cell can be utilized for power generation, and this range coincides with the peak of the incident AM 1.5G photon flux. Moreover, even with tail absorption in the red-NIR below 675 nm, the resulting blue/green tint is often more visually acceptable than yellow/red tinting, which offers more design freedom for NIR selective-harvesting luminophores. [1,2,22] Optical absorption in organic and molecular semiconductors originates from the transition from the ground state to excited molecular orbitals (e.g., S 0 → S 1 , S 0 → S 2 ). The gap between the excited molecular orbitals (S 1 and S 2 ) results in discontinuity in the density of states, which allows the transmission of photons. The molecular structure can be designed so that this gap is Transparent luminescent solar concentrators (TLSCs) selectively harvest ultraviolet and near-infrared photons. Due to the absence of electrodes, busbars, and collection grids over the solar harvesting area, the device structure enables these devices to achieve the highest levels of transparency and aesthetics. Recently, CO i 8DFIC has been developed as a nonfullerene acceptor in organic photovoltaics with unprecedented performance. In this work, nonfullerene acceptors are introduced into TLSCs as the luminophores. The impact of...

show abstract

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 97%

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 99%

Section: Photovoltaic and Aesthetic Quality Parameters Of The Tlscsmentioning

confidence: 99%

See 1 more Smart Citation

High‐Performance Near‐Infrared Harvesting Transparent Luminescent Solar Concentrators

Yang

Moemeni

Bates

et al. 2020

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…The PCE and average visible transmittance (AVT) should be simultaneously used to evaluate the performance of semitransparent PSCs. The calculated method of AVT is described in the Supplementary materials [11,12]. The commonly reported semitransparent PSCs were prepared with narrow band gap polymer PTB7-Th as donor, exhibiting PCE less than 10% with AVT over 20%.…”

Section: Introductionmentioning

confidence: 99%

Semitransparent polymer solar cells with 12.37% efficiency and 18.6% average visible transmittance

Wang

et al. 2020

Science Bulletin

167

View full text Add to dashboard Cite

“…Such loss in brightness is similar to the one obtained from technical glasses, which are widely used in transparent building façades. Similarly, other chromatic attributes [ 48 ] of the transparent OPV devices (Table S5 and Figure S16, Supporting Information) indicate that color neutrality and device performance can be attained simultaneously. Finally, one must note that no significant cell degradation is observed when the encapsulated cells are kept in ambient conditions in the dark.…”

Section: Resultsmentioning

confidence: 93%

Light Harvesting at Oblique Incidence Decoupled from Transmission in Organic Solar Cells Exhibiting 9.8% Efficiency and 50% Visible Light Transparency

Liu

Gerling

Bernal-Texca

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

For many years, it has been recognized that potential organic photovoltaic cells must be integrated into elements requiring high transparency. In most of such elements, sunlight is likely to be incident at large angles. Here it is demonstrated that light transmission can be largely decoupled from harvesting by optically tailoring an infrared shifted nonfullerene acceptor based organic cell architecture. A 9.67% power conversion efficiency at 50° incidence is achieved together with an average visual transmission above 50% at normal incidence. The deconstruction of a 1D nanophotonic structure is implemented to conclude that just two λ/4 thick layers are essential to reach, for a wide incidence angle range, a higher than 50% efficiency increase relative to the standard configuration reference. In an outdoor measurement of vertically positioned 50% visible transparent cells, it is demonstrated that 9.80% of sunlight energy can be converted into electricity during the course of 1 day.

show abstract

How to Accurately Report Transparent Solar Cells

Abstract: Plasmonic photothermic directed broadband sunlight harnessing for seawater catalysis and desalination. Energy Environ. Sci. 9, 3151-3160.

Cited by 199 publications

References 11 publications

High‐Performance Near‐Infrared Harvesting Transparent Luminescent Solar Concentrators

High‐Performance Near‐Infrared Harvesting Transparent Luminescent Solar Concentrators

Semitransparent polymer solar cells with 12.37% efficiency and 18.6% average visible transmittance

Light Harvesting at Oblique Incidence Decoupled from Transmission in Organic Solar Cells Exhibiting 9.8% Efficiency and 50% Visible Light Transparency

Contact Info

Product

Resources

About