All Outputs (7)

Strategic Design, Synthesis, and Computational Characterization of Hole Transport Materials for Lead-Free Perovskite Solar Cells (2025)
Journal Article
Abid, Z., Akram, W., Marcial-Hernandez, R., Gunturkun, D., Shahid, M., Altaf, M., Min, J., Khan, J. I., Iqbal, J., Rasul, S., Nielsen, C. B., & Ashraf, R. S. (in press). Strategic Design, Synthesis, and Computational Characterization of Hole Transport Materials for Lead-Free Perovskite Solar Cells. ACS Sustainable Chemistry and Engineering, https://doi.org/10.1021/acssuschemeng.4c07415

Lead-free perovskites based on nontoxic titanium(IV) are promising candidates for photovoltaic applications due to their improved intrinsic/environmental stability compared to the lead analogues in metal halide perovskite solar cells (PSCs). However,... Read More about Strategic Design, Synthesis, and Computational Characterization of Hole Transport Materials for Lead-Free Perovskite Solar Cells.

Evaluation of interfacial photophysical processes by time-resolved optical spectroscopy in perovskite solar cells (2024)
Journal Article
Khan, J. I., Yang, Y., Palmer, J. R., Tyndall, S. B., Chaudhuri, S., Liu, C., Grater, L., North, J. D., Chen, B., Young, R. M., Schatz, G. C., Wasielewski, M. R., Kanatzidis, M. G., Swearer, D. F., & Sargent, E. H. (in press). Evaluation of interfacial photophysical processes by time-resolved optical spectroscopy in perovskite solar cells. Matter, https://doi.org/10.1016/j.matt.2024.05.046

Thermally-Induced Degradation in PM6:Y6-Based Bulk Heterojunction Organic Solar Cells (2023)
Journal Article
Alam, S., Aldosari, H., Petoukhoff, C. E., Váry, T., Althobaiti, W., Alqurashi, M., Tang, H., Khan, J. I., Nádaždy, V., Müller-Buschbaum, P., Welch, G. C., & Laquai, F. (2024). Thermally-Induced Degradation in PM6:Y6-Based Bulk Heterojunction Organic Solar Cells. Advanced Functional Materials, 34(6), Article 2308076. https://doi.org/10.1002/adfm.202308076

Thermally induced degradation of organic photovoltaic devices hinders the commercialization of this emerging PV technology. Thus, a precise understanding of the origin of thermal device instability, as well as identifying strategies to circumvent deg... Read More about Thermally-Induced Degradation in PM6:Y6-Based Bulk Heterojunction Organic Solar Cells.

28.2%-efficient, outdoor-stable perovskite/silicon tandem solar cell (2021)
Journal Article
Liu, J., Aydin, E., Yin, J., De Bastiani, M., Isikgor, F. H., Rehman, A. U., Yengel, E., Ugur, E., Harrison, G. T., Wang, M., Gao, Y., Khan, J. I., Babics, M., Allen, T. G., Subbiah, A. S., Zhu, K., Zheng, X., Yan, W., Xu, F., Salvador, M. F., …De Wolf, S. (2021). 28.2%-efficient, outdoor-stable perovskite/silicon tandem solar cell. Joule, 5(12), 3169-3186. https://doi.org/10.1016/j.joule.2021.11.003

Stacking perovskite solar cells onto crystalline silicon bottom cells in a monolithic tandem configuration enables power-conversion efficiencies (PCEs) well above those of their single-junction counterparts. However, state-of-the-art wide-band-gap pe... Read More about 28.2%-efficient, outdoor-stable perovskite/silicon tandem solar cell.

Charge Carrier Recombination at Perovskite/Hole Transport Layer Interfaces Monitored by Time-Resolved Spectroscopy (2021)
Journal Article
Khan, J. I., Isikgor, F. H., Ugur, E., Raja, W., Harrison, G. T., Yengel, E., Anthopoulos, T. D., De Wolf, S., & Laquai, F. (2021). Charge Carrier Recombination at Perovskite/Hole Transport Layer Interfaces Monitored by Time-Resolved Spectroscopy. ACS Energy Letters, 6(12), 4155-4164. https://doi.org/10.1021/acsenergylett.1c01931

Carrier recombination at the interface between charge extraction layers and the perovskite photoactive layer in solar cells reduces the quasi-Fermi level splitting (QFLS) and hence the device's open-circuit voltage (VOC). Distinguishing between inter... Read More about Charge Carrier Recombination at Perovskite/Hole Transport Layer Interfaces Monitored by Time-Resolved Spectroscopy.

Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT-Based Non-Fullerene Acceptors with PCE10 as Donor Polymer (2021)
Journal Article
Khan, J. I., Alamoudi, M. A., Chaturvedi, N., Ashraf, R. S., Nabi, M. N., Markina, A., Liu, W., Dela Peña, T. A., Zhang, W., Alévêque, O., Harrison, G. T., Alsufyani, W., Levillain, E., De Wolf, S., Andrienko, D., McCulloch, I., & Laquai, F. (2021). Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT-Based Non-Fullerene Acceptors with PCE10 as Donor Polymer. Advanced Energy Materials, 11(28), Article 2100839. https://doi.org/10.1002/aenm.202100839

Advancing non-fullerene acceptor (NFA) organic photovoltaics requires the mitigation of the efficiency-limiting processes. Acceptor end-group and side-chain engineering are two handles to tune properties, and a better understanding of their specific... Read More about Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT-Based Non-Fullerene Acceptors with PCE10 as Donor Polymer.

Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells (2020)
Journal Article
Karuthedath, S., Gorenflot, J., Firdaus, Y., Chaturvedi, N., De Castro, C. S., Harrison, G. T., Khan, J. I., Markina, A., Balawi, A. H., Peña, T. A. D., Liu, W., Liang, R. Z., Sharma, A., Paleti, S. H., Zhang, W., Lin, Y., Alarousu, E., Anjum, D. H., Beaujuge, P. M., De Wolf, S., …Laquai, F. (2021). Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells. Nature Materials, 20(3), 378-384. https://doi.org/10.1038/s41563-020-00835-x

In bulk heterojunction (BHJ) organic solar cells (OSCs) both the electron affinity (EA) and ionization energy (IE) offsets at the donor–acceptor interface should equally control exciton dissociation. Here, we demonstrate that in low-bandgap non-fulle... Read More about Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells.