High-efficiency inverted dithienogermole–thienopyrrolodione-based polymer solar cells

Small, Cephas E.; Chen, Song; Subbiah, Jegadesan; Amb, Chad M.; Tsang, Sai‐Wing; Lai, Tzung-Han; Reynolds, John R.; So, Franky

doi:10.1038/nphoton.2011.317

Cited by 910 publications

(334 citation statements)

References 36 publications

Supporting

Mentioning

324

Contrasting

Unclassified

Order By: Relevance

“…This is not the case for the regular MSSC that operates well immediately. The requirement for light soaking of TiO x is consistent with previous reports in organic photovoltaics 26 .…”

Section: Resultssupporting

confidence: 90%

Efficient organometal trihalide perovskite planar-heterojunction solar cells on flexible polymer substrates

et al. 2013

View full text Add to dashboard Cite

Organometal trihalide perovskite solar cells offer the promise of a low-cost easily manufacturable solar technology, compatible with large-scale low-temperature solution processing. Within 1 year of development, solar-to-electric power-conversion efficiencies have risen to over 15%, and further imminent improvements are expected. Here we show that this technology can be successfully made compatible with electron acceptor and donor materials generally used in organic photovoltaics. We demonstrate that a single thin film of the lowtemperature solution-processed organometal trihalide perovskite absorber CH 3 NH 3 PbI 3-x Cl x , sandwiched between organic contacts can exhibit devices with power-conversion efficiency of up to 10% on glass substrates and over 6% on flexible polymer substrates. This work represents an important step forward, as it removes most barriers to adoption of the perovskite technology by the organic photovoltaic community, and can thus utilize the extensive existing knowledge of hybrid interfaces for further device improvements and flexible processing platforms.

show abstract

“…This is not the case for the regular MSSC that operates well immediately. The requirement for light soaking of TiO x is consistent with previous reports in organic photovoltaics 26 .…”

Section: Resultssupporting

confidence: 90%

Efficient organometal trihalide perovskite planar-heterojunction solar cells on flexible polymer substrates

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Even after careful chemical cleaning, the surfaces of FTO substrates still contain chemisorbed small organic species. UVO or O 2 plasma treatment is widely used as a cleaning process [22][23][24] . We found that UVO treatment can effectively remove the residual organic species and, therefore, significantly reduce the contact angle of the polar solvents ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

Efficient hole-blocking layer-free planar halide perovskite thin-film solar cells

et al. 2015

View full text Add to dashboard Cite

Efficient lead halide perovskite solar cells use hole-blocking layers to help collection of photogenerated electrons and to achieve high open-circuit voltages. Here, we report the realization of efficient perovskite solar cells grown directly on fluorine-doped tin oxide-coated substrates without using any hole-blocking layers. With ultraviolet-ozone treatment of the substrates, a planar Au/hole-transporting material/CH 3 NH 3 PbI 3-x Cl x /substrate cell processed by a solution method has achieved a power conversion efficiency of over 14% and an open-circuit voltage of 1.06 V measured under reverse voltage scan. The open-circuit voltage is as high as that of our best reference cell with a TiO 2 hole-blocking layer. Besides ultraviolet-ozone treatment, we find that involving Cl in the synthesis is another key for realizing high open-circuit voltage perovskite solar cells without hole-blocking layers. Our results suggest that TiO 2 may not be the ultimate interfacial material for achieving high-performance perovskite solar cells.

show abstract

“…1,2 Recently, power conversion efficiency of $8%-9% has been reported. [3][4][5] Most of efficient organic solar cells are fabricated with the active layer composed of low bandgap polymer (electron donor): fullerene (electron acceptor) blends, in which the understanding of morphology of blend thin films is crucial to improve the performance of organic solar cells. 6,7 Raman spectroscopy is an inelastic light scatteringbased technique which probes the vibrational modes of a material and it is a very valuable tool to probe the morphology of conjugated polymer:fullerene thin films.…”

mentioning

confidence: 99%

In-situ monitoring of molecular vibrations of two organic semiconductors in photovoltaic blends and their impact on thin film morphology

Zhang

Hollis

Suh

et al. 2013

Applied Physics Letters

View full text Add to dashboard Cite

We report in-situ simultaneous monitoring of molecular vibrations of two components in organic photovoltaic blends using resonant Raman spectroscopy. Blend films were composed of a low bandgap copolymer thieno[3,2-b]thiophene-diketopyrrolopyrrole (DPPTTT) and (6,6)-phenyl-C71-butyric acid ester (PC 70BM). Changes in Raman spectra associated with crystallization processes of each component and their impact on thin film morphology were studied during thermal annealing and cooling processes. Transition temperatures to crystalline phases in blends were measured at ∼150 °C and ∼170 °C for DPPTTT and PC 70BM, respectively. Such phase changes lead to modifications in local chemical composition reducing relative Raman peak intensities (IPC70BM/IDPPTTT) from ∼0.4 in PC 70BM-rich domains to ∼0.15 in homogeneous areas

show abstract

High-efficiency inverted dithienogermole–thienopyrrolodione-based polymer solar cells

Cited by 910 publications

References 36 publications

Efficient organometal trihalide perovskite planar-heterojunction solar cells on flexible polymer substrates

Efficient organometal trihalide perovskite planar-heterojunction solar cells on flexible polymer substrates

Efficient hole-blocking layer-free planar halide perovskite thin-film solar cells

In-situ monitoring of molecular vibrations of two organic semiconductors in photovoltaic blends and their impact on thin film morphology

Contact Info

Product

Resources

About