The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.
Intensity Dependence of Current–Voltage Characteristics and Recombination in High-Efficiency Solution-Processed Small-Molecule Solar Cells
Abstract
Solution-processed small-molecule p-DTS(FBTTh2)2:PC71BM bulk heterojunction (BHJ) solar cells with power conversion efficiency of 8.01% are demonstrated. The fill factor (FF) is sensitive to the thickness of a calcium layer between the BHJ layer and the Al cathode; for 20 nm Ca thickness, the FF is 73%, the highest value reported for an organic solar cell. The maximum external quantum efficiency exceeds 80%. After correcting for the total absorption in the cell through normal incidence reflectance measurements, the internal quantum efficiency approaches 100% in the spectral range of 600-650 nm and well over 80% across the entire spectral range from 400 to 700 nm. Analysis of the current-voltage (J-V) characteristics at various light intensities provides information on the different recombination mechanisms in the BHJ solar cells with different thicknesses of the Ca layer. Our analysis reveals that the J-V curves are dominated by first-order recombination from the short-circuit condition to the maximum power point and evolve to bimolecular recombination in the range of voltage from the maximum power point to the open-circuit condition in the optimized device with a Ca thickness of 20 nm. In addition, the normalized photocurrent density curves reveal that the charge collection probability remains high; about 90% of charges are collected even at the maximum power point. The dominance of bimolecular recombination only when approaching open circuit, the lack of Shockley-Read-Hall recombination at open circuit, and the high charge collection probability (97.6% at the short circuit and constant over wide range of applied voltage) lead to the high fill factor.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Yu, G., Gao, J., Hummelen, J. C., Wudl, F., & Heeger, A. J. (1995) · Science · doi:10.1126/science.270.5243.1789 · Cited by 10,348
Self-citationStatistics of the Recombinations of Holes and Electrons
Shockley, W., & Read, W. T. (1952) · Physical Review · doi:10.1103/physrev.87.835 · Cited by 6,589
Li, G., Shrotriya, V., Huang, J., Yao, Y., Moriarty, T., Emery, K., & Yang, Y. (2005) · Nature Materials · doi:10.1038/nmat1500 · Cited by 5,535
Bulk heterojunction solar cells with internal quantum efficiency approaching 100%
Park, S. H., Roy, A., Beaupré, S., Cho, S., Coates, N., Moon, J. S., Moses, D., Leclerc, M., Lee, K., & Heeger, A. J. (2009) · Nature Photonics · doi:10.1038/nphoton.2009.69 · Cited by 4,073
Self-citationElectron-Hole Recombination in Germanium
Hall, R. N. (1952) · Physical Review · doi:10.1103/physrev.87.387 · Cited by 2,776
Recombination in polymer-fullerene bulk heterojunction solar cells
Cowan, S. R., Roy, A., & Heeger, A. J. (2010) · Physical Review B · doi:10.1103/physrevb.82.245207 · Cited by 2,071
Self-citationLight intensity dependence of open-circuit voltage of polymer:fullerene solar cells
Koster, L. J. A., Mihailetchi, V. D., Ramaker, R., & Blom, P. W. M. (2005) · Applied Physics Letters · doi:10.1063/1.1889240 · Cited by 1,408
Mihailetchi, V. D., Xie, H. X., de Boer, B., Koster, L. J. A., & Blom, P. W. M. (2006) · Advanced Functional Materials · doi:10.1002/adfm.200500420 · Cited by 1,283
Recombination and loss analysis in polythiophene based bulk heterojunction photodetectors
Schilinsky, P., Waldauf, C., & Brabec, C. J. (2002) · Applied Physics Letters · doi:10.1063/1.1521244 · Cited by 1,032
Braun, C. L. (1984) · The Journal of Chemical Physics · doi:10.1063/1.447243 · Cited by 756
Cited by
Zhou, J., Zuo, Y., Wan, X., Long, G., Zhang, Q., Ni, W., Liu, Y., Li, Z., He, G., Li, C., et al. (2013) · Journal of the American Chemical Society · doi:10.1021/ja403318y · Cited by 698
A molecular nematic liquid crystalline material for high-performance organic photovoltaics
Sun, K., Xiao, Z., Lu, S., Zajaczkowski, W., Pisula, W., Hanssen, E., White, J. M., Williamson, R. M., Subbiah, J., Ouyang, J., et al. (2015) · Nature Communications · doi:10.1038/ncomms7013 · Cited by 630
Kyaw, A. K. K., Wang, D. H., Wynands, D., Zhang, J., Nguyen, T.-Q., Bazan, G. C., & Heeger, A. J. (2013) · Nano Letters · doi:10.1021/nl401758g · Cited by 615
Self-citation16.67% Rigid and 14.06% Flexible Organic Solar Cells Enabled by Ternary Heterojunction Strategy
Yan, T., Song, W., Huang, J., Peng, R., Huang, L., & Ge, Z. (2019) · Advanced Materials · doi:10.1002/adma.201902210 · Cited by 579
Small is Powerful: Recent Progress in Solution‐Processed Small Molecule Solar Cells
Collins, S. D., Ran, N. A., Heiber, M. C., & Nguyen, T. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201602242 · Cited by 414
Chen, W., Zhang, J., Xu, G., Xue, R., Li, Y., Zhou, Y., Hou, J., & Li, Y. (2018) · Advanced Materials · doi:10.1002/adma.201800855 · Cited by 348
Long, X., Ding, Z., Dou, C., Zhang, J., Liu, J., & Wang, L. (2016) · Advanced Materials · doi:10.1002/adma.201601205 · Cited by 331
Jung, J. W., Chueh, C., & Jen, A. K. ‐. (2015) · Advanced Energy Materials · doi:10.1002/aenm.201500486 · Cited by 256
Panchromatic ternary organic solar cells with 9.44% efficiency incorporating porphyrin-based donors
Vartanian, M., de la Cruz, P., Biswas, S., Sharma, G. D., & Langa, F. (2018) · Nanoscale · doi:10.1039/c8nr02856g · Cited by 21
π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application
Wu, R., Yin, L., & Li, Y. (2016) · Science China Materials · doi:10.1007/s40843-016-5050-7 · Cited by 20
Low Energy Loss of 0.57 eV and High Efficiency of 8.80% in Porphyrin-Based BHJ Solar Cells
Vartanian, M., Singhal, R., de la Cruz, P., Biswas, S., Sharma, G. D., & Langa, F. (2018) · ACS Applied Energy Materials · doi:10.1021/acsaem.8b00024 · Cited by 19
Bucher, L., Tanguy, L., Desbois, N., Karsenti, P., Harvey, P. D., Gros, C. P., & Sharma, G. D. (2018) · Solar RRL · doi:10.1002/solr.201700168 · Cited by 13
Metadata
- Authors
- Kyaw, A. K. K., Wang, D. H., Gupta, V., Leong, W. L., Ke, L., Bazan, G. C., & Heeger, A. J.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-04-24
- Volume
- 7
- Issue
- 5
- Pages
- 4569-4577
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2156032724
- Cited by
- 1,046
- References
- 23
- FWCI
- 36.35
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
