Читать книгу Fundamentals of Solar Cell Design - Rajender Boddula - Страница 54

Ning Li et al. [3] developed single-junction OPV based on GEN-2:[60] PCBM achieve a PCE of 6.63%, and maximum PCE of 10% is expected for a TSC incorporating an OPV12:[60]PCBM-based at bottom and pDPP5T-2:[70]PCBM-based a top [25]. Abd. Rashid bin Mohd Yusoff et al. developed and characterized PSEHTT:ICBA and PSBTBT:PC70BM as the active layers and the TSC showed a high VOC 1.62V, a moderate JSC 8.23 mAcm², FF 62.98%, leading to the PCE of 8.40% [26]. Lingxian Meng et al. reported the performance of TSC on 0.05 to 1.12 sun intensities. The PCEs above 15% intensity varies within 4.97 to 112.68 mW/cm² and PCE of 17.87% at intensity 25.99 mW/cm² [27]. Muath Bani Salim et al. reported 26 single-cell OPV devices to form the TOPV front and back cells using PBDTS-TDZ:ITIC in the front cells and PTB7-Th:O6T-4F:PC71BM gives 18.6% efficiency [28]. Lijian Zuo et al. demonstrated two mirror-like electrodes, ultrathin Ag capped with a dielectric TeO2 layer, and a thick Ag electrode. As a result, a top-illuminated ITO-free SCTOPV show 7.4% and ITO-based 7.5% [29]. Abd. Rashid bin Mohd Yusoff et al. reported that Au-doped SLGNR electrodes are implemented in TSC, and PCE achieved is 8.48% comparable to generally used transparent electrode [30]. Hengda Sun et al. designed OHJ CGL that is composed of HAT-CN/m-MTDATA, which shows that MCE and EQE are achieved as 201cd/A and 54.5%, respectively (Figure 3.1) [31].

Bangwu Luo et al. reported the use of PEDOT:PSS as the top transparent electrode in TSC. The fabricated CFPTSC with polymer electrodes displays PCE values from 7.23% to 8.34% and yielded color of the cells [32]. Miaomiao Li et al. reported a solution-processed TSC, based on DR3TSBDT and DPPEZnP-TBO, which propose proficient and shows the power conversion efficiency of 12.50% [33]. Thue T. Larsen-Olsen et al. reported opto-electronically probe individual junctions and carrier transport across interfaces in fully printed and coated TPSC. Inherent limitations to the accuracy of EQE and LBIC measurements on non-ideal TSC are described through the use of a small-signal electrical model Figures 3.2 and 3.3 [34].

Figure 3.1 (a) J-V plot A and B. (b) Temperature-current density graph. (Reprinted with the permission from reference [31].)

Figure 3.2 (a) Non-biased EQE spectra and (b) LBIC images using two different laser wavelengths. (c) Schematic structure tandem device. (Reprinted with the permission from reference [34].)

Figure 3.3 (a) LBIC with and without voltage and light biasing. The 405-nm LBIC probe laser and 660-nm bias. (b) Schematic structure of tandem PSC. (Reprinted with the permission from reference [34].)