Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

Chen, Cheng Chiang; Chang, Sheng Hsiung; Chen, Lung-Chien; Kao, Feng Sheng; Cheng, Hsu-Yung; Yeh, Shih Chieh; Chen, Chin‐Ti; Wu, Wan-Yu; Tseng, Zong‐Liang; Chuang, Chuan Lung; Wu, Chun Guey

doi:10.1016/j.solener.2016.05.032

Cited by 36 publications

(25 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e di erences between the nanoparticles from the two (( Figure 7(b), 0.1 ml of the cochineal extract) and (Figure 7(c), 0.4 ml of the cochineal extract)) are clearly observed by the surface roughness being less in the case of AgNPs with 0.1 ml of the cochineal extract compared to 0.4 ml of the cochineal extract, which might contribute to the size increase of the AgNPs due to cochineal adsorption. Studies show that, to obtain a good e ciency of a hybrid device, it must have roughness around 2 nm [32]. In this case, the 0.4 ml sample of the cochineal extract that exceeds this value due to the size of the AgNPs must undergo an optimization of the spincoating technique.…”

Section: Cyclic Voltammetry Characterizationmentioning

confidence: 99%

Improvement of Cochineal Extract (Dactylopius coccus Costa) Properties Based on the Green Synthesis of Silver Nanoparticles for Application in Organic Devices

Stael

Parra-Cruz

Naranjo

et al. 2018

Journal of Nanotechnology

View full text Add to dashboard Cite

e UV-Vis absorption and conductivity properties of the organic sample cochineal (Dactylopius coccus Costa) were modified by using it as a reducing agent in the biosynthesis of silver nanoparticles. is was done in a straightforward way in order to allow its possible application in organic devices. e biosynthesized solution exhibited a hybrid material with a UV-Vis absorbance range from 205 to 650 nm. e sizes of silver nanoparticles of the hybrid material were between 5 and 10 nm. X-ray diffraction (XRD) revealed silver structures, when samples were dried at 100°C. At 40°C, the structures detected were chlorargyrite (AgCl) and silver oxide (Ag 2 O). e nucleation and subsequent growth of the hybrid thin film on the substrates indicated an increase of clusters and roughness in comparison to thin films made solely from cochineal. e thin films of hybrid materials showed an improvement of 40% in their electrical potential. e stability at room temperature demonstrated that the hybrid material could be useful as a potential candidate for photoactive thin films in organic devices.

show abstract

Section: Cyclic Voltammetry Characterizationmentioning

confidence: 99%

Improvement of Cochineal Extract (Dactylopius coccus Costa) Properties Based on the Green Synthesis of Silver Nanoparticles for Application in Organic Devices

Stael

Parra-Cruz

Naranjo

et al. 2018

Journal of Nanotechnology

View full text Add to dashboard Cite

show abstract

“…High-quality organic lead halide perovskites (CH 3 NH 3 PbI 3 , CH 3 NH 3 PbI 3− x Cl x , and CH(NH 2 ) 2 PbI 3 ), which can be fabricated using a two-step or a one-step spin-coating method [ 1 , 2 , 3 , 4 ], have been widely used as the light harvesting material in photovoltaic cells due to their high power conversion efficiency ( PCE ) and low-cost of fabrication. It is well known that the low absorption bandgap (<1.6 eV) [ 5 ], small exciton binding energy (2–70 meV) [ 6 , 7 , 8 , 9 ], long exciton lifetime (>10 ns) [ 10 , 11 , 12 ], high carrier mobility (>5 cm 2 /Vs) [ 13 , 14 ], and long carrier diffusion length (>1 μm) [ 15 , 16 ] of perovskite thin films are the reasons why high-performance photovoltaic cells can be realized. The first use of CH 3 NH 3 PbI 3 (MAPbI 3 ) as a light harvesting material deposited on top of a hydrophilic mesoporous TiO 2 film [ 17 ], resulted in a moderate PCE of 3.81% [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Overcoming the Intrinsic Difference between Hydrophilic CH3NH3PbI3 and Hydrophobic C60 Thin Films to Improve the Photovoltaic Performance

et al. 2017

Self Cite

View full text Add to dashboard Cite

Dimethylformamide/dimethyl sulfoxide solvent mixtures were used as the CH3NH3PbI3 (MAPbI3) precursor solvent in a one-step spin coating method to fabricate smooth and hydrophilic crystalline MAPbI3 thin films on top of hydrophobic carbon-60 (C60) thin film for highly efficient photovoltaics. The structural, optical, and excitonic characteristics of the resultant MAPbI3 thin films were analyzed using X-ray diffraction (XRD), atomic-force microscopy, absorbance spectroscopy, photoluminescence (PL) spectrometry, and nanosecond time-resolved PL. There was a trade-off between the crystallinity and surface roughness of the MAPbI3 thin films, which strongly influenced the device performance of MAPbI3-based photovoltaics. The high power conversion efficiency (PCE) of 17.55% was achieved by improving the wettability of MAPbI3 precursor solutions on top of the C60 thin films. In addition, it was predicted that the fill factor and PCE could be further improved by increasing the crystallinity of the MAPbI3 thin film while keeping it smooth.

show abstract

“…It is amazing that the high-efficiency perovskite solar cells can be realized by using the low-temperature solution-processed methods because the presence of high-density defects in the active layer [20,21,22] usually can simultaneously reduce the V OC , J SC and fill factor (FF) of solar cells. It is well known that high-efficiency perovskite solar cells can be explained mainly due to the large absorption coefficient [23,24], moderate refractive index [25,26], low exciton binding energy [27,28], long exciton (carrier) lifetime [29,30] and long exciton (carrier) diffusion length [31,32]. In addition, the high PCE of perovskite solar cells also relieson the efficient energy transfer at the perovskite/electron transport layer (ETL) and perovskite/hole transport layer (HTL) interfaces.…”

Section: Introductionmentioning

confidence: 99%

The Way to Pursue Truly High-Performance Perovskite Solar Cells

Thakur

Chiang

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

The power conversion efficiency (PCE) of single-junction solar cells was theoretically predicted to be limited by the Shockley–Queisser limit due to the intrinsic potential loss of the photo-excited electrons in the light absorbing materials. Up to now, the optimized GaAs solar cell has the highest PCE of 29.1%, which is close to the theoretical limit of ~33%. To pursue the perfect photovoltaic performance, it is necessary to extend the lifetimes of the photo-excited carriers (hot electrons and hot holes) and to collect the hot carriers without potential loss. Thanks to the long-lived hot carriers in perovskite crystal materials, it is possible to completely convert the photon energy to electrical power when the hot electrons and hot holes can freely transport in the quantized energy levels of the electron transport layer and hole transport layer, respectively. In order to achieve the ideal PCE, the interactions between photo-excited carriers and phonons in perovskite solar cells has to be completely understood.

show abstract

Improving the efficiency of inverted mixed-organic-cation perovskite absorber based photovoltaics by tailing the surface roughness of PEDOT: PSS thin film

Cited by 36 publications

References 26 publications

Improvement of Cochineal Extract (Dactylopius coccus Costa) Properties Based on the Green Synthesis of Silver Nanoparticles for Application in Organic Devices

Improvement of Cochineal Extract (Dactylopius coccus Costa) Properties Based on the Green Synthesis of Silver Nanoparticles for Application in Organic Devices

Overcoming the Intrinsic Difference between Hydrophilic CH3NH3PbI3 and Hydrophobic C60 Thin Films to Improve the Photovoltaic Performance

The Way to Pursue Truly High-Performance Perovskite Solar Cells

Contact Info

Product

Resources

About