Understanding the charge transport mechanism in natural dye-sensitized solar cells (DSSCs) remains a challenge to achieving high efficiency. This work investigates the charge transport mechanism in $\beta$-carotene DSSCs cosensitized with MAPbI₃ perovskites (P) according to experimental results validated by mathematical models. Photoanode heterostructures [ETL/P/HTL] were characterized via Raman and SEM for checking (i) layers deposition, and (ii) dye uniformity. Cosensitization yielded minimum voltage loss (built-in potential) at the ITO/TiO₂ junction, probably due to: (i) increased likelihood of absorbing more VIS photons, (ii) upward shifting of TiO₂ Fermi level, and (iii) reduction in the photoinduced electrostatic potential barrier, ${\varphi }_{\mathit{SBH}}$. Rather than voltage loss from charge transport across a Schottky barrier, perovskites prevent back-electrons facilitated by exciton generation, electron injection, and quantum tunneling. Perovskite-integrated photoanodes displayed notably high V_oc (>0.65 V). This research shows the potential of perovskites/carotenoids light harvesters for naturally-sensitized solar cells.

了解天然染料敏化太阳能电池（DSSC）中的电荷传输机制仍然是实现高效率的挑战。这项工作研究了电荷传输机制$\beta$根据数学模型验证的实验结果，β-胡萝卜素 DSSC 与 MAPbI _{3钙钛矿 (P) 共敏。}通过拉曼和 SEM对光电阳极异质结构 [ETL/P/HTL] 进行表征，以检查 (i) 层沉积和 (ii) 染料均匀性。_{共敏化在 ITO/TiO 2}结处产生最小的电压损失（内置电势），可能是由于：(i) 吸收更多可见光光子的可能性增加，(ii) TiO ₂费米能级向上移动，以及 (iii) 减少在光致静电势垒中，${\phi }_{\mathit{SBH}}$。钙钛矿不是通过肖特基势垒的电荷传输造成电压损失，而是防止激子产生、电子注入和量子隧道促进的反电子。钙钛矿集成光电阳极表现出显着高的 V _oc (>0.65 V)。这项研究展示了钙钛矿/类胡萝卜素光收集器在自然敏化太阳能电池中的潜力。