The data that support the findings of this study are available from the corresponding author upon reasonable request.

Low temperature solution-made chiral lead halide perovskites (LHPs) have the spontaneous Bychkov-Rashba spin orbit coupling (SOC) and chiral-induced spin selectivity (CISS) characters. Their coexistence may give rise to considerable spin...

such as electric fields, magnetic fields, and polarized light. [1] When an output electrical signal such as resistance varies with respect to a changing magnetic field in the dark environment for an organic semiconductor, the so-called organic magnetoresistance (OMR) is developed. In fact, many organic semiconductors that include polymers and small molecular materials have been recognized as desirable candidates for spintronic applications, on account of their long spin relaxation times and easy spin manipulation. [2,3] Basically, the OMR effect does not require ferromagnets and is the innate property of organic semiconductors. This makes it distinct from organic spin valves (SVs) and magnetic tunnel junctions (MTJs). [4][5][6] In those

Chiral-induced magneto-photoluminescence (magneto-PL) is a newly raised magneto-optical phenomenon, where a photoluminescent intensity can be effectively manipulated by magnetic fields and material helicity. By far, little is known regarding the...

Since magnetic fields can probe fractions of spin singlet and triplet at charge-transfer states (CTSs) for organic bulk heterojunction (BHJ) solar cells, this makes the magneto-photocurrent (MPC) a powerful and versatile method to unravel the photovoltaic spin-dynamics. The method is of paramount importance for deeply understanding the spin-dependent polaron pair (PP) dissociation at excited states. The foundation lies primarily on the coherent spin mixing. Unfortunately, it remains challenging and highly demanding to carry on with a comprehensive study for the objective of precisely and manifestly interpreting the MPC effect. Herein, a joint experimental and theoretical study is performed for an in-depth exploration of MPC on prototypical nonfullerene acceptor ITIC-based organic binary and ternary BHJ solar cells. We are devoted particularly to MPC with distinct lineshapes, magnitudes, and signs. With the assistance of analytical models, the singlet PP dissociation at CTS and triplet exciton–polaron reaction are verified to be dominant for the photocurrent generations. Our study suggests that the MPC offers an effective means for revealing the photovoltaic spin-dynamic process. It helps to quantify dissociation rates for spin polarons at intermediate CTS of organic BHJ systems.